diff --git a/desktop_version/lang/ar/strings.xml b/desktop_version/lang/ar/strings.xml
index 7c192c43..cdf7715b 100644
--- a/desktop_version/lang/ar/strings.xml
+++ b/desktop_version/lang/ar/strings.xml
@@ -636,6 +636,8 @@
     <string english="Enemy Type Changed" translation="تغير نوع الأعداء" explanation="level editor, user changed enemy appearance for the room" max="38*3" max_local="38*3"/>
     <string english="Platform speed is now {speed}" translation="تغيرت سرعة المنصات إلى {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3" max_local="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3" max_local="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3" max_local="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3" max_local="38*3"/>
     <string english="Reloaded resources" translation="أعيد فتح ملفات الموارد" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3" max_local="38*3"/>
     <string english="ERROR: Invalid format" translation="خطأ: صيغة المكتوب غير مناسبة" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3" max_local="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="فتحت الغرفة: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3" max_local="38*3"/>
diff --git a/desktop_version/lang/ca/strings.xml b/desktop_version/lang/ca/strings.xml
index fa956d2f..28ba31c6 100644
--- a/desktop_version/lang/ca/strings.xml
+++ b/desktop_version/lang/ca/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="S’ha canviat el tipus d’enemic" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="La velocitat de les plataformes és ara {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="S’han recarregat els recursos" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="ERROR: Format invàlid" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="S’ha obert el mapa: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/cy/strings.xml b/desktop_version/lang/cy/strings.xml
index 90b23913..bd450039 100644
--- a/desktop_version/lang/cy/strings.xml
+++ b/desktop_version/lang/cy/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Newidiodd Math y Gelyn" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Cyflymder llwyfan yw {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Adnoddau wedi&apos;u hail-lwytho" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="GWALL: Fformat annilys" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Map wedi&apos;i lwytho: {filename}.vvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/de/strings.xml b/desktop_version/lang/de/strings.xml
index e869c9db..381fee96 100644
--- a/desktop_version/lang/de/strings.xml
+++ b/desktop_version/lang/de/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Feindtyp geändert" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Plattformgeschwindigkeit ist jetzt {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Ressourcen neu geladen" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="FEHLER: ungültiges Format" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Karte geladen: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/en/strings.xml b/desktop_version/lang/en/strings.xml
index ee3db7b6..1412989e 100644
--- a/desktop_version/lang/en/strings.xml
+++ b/desktop_version/lang/en/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/eo/strings.xml b/desktop_version/lang/eo/strings.xml
index 63fcd003..33f0ffdb 100644
--- a/desktop_version/lang/eo/strings.xml
+++ b/desktop_version/lang/eo/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Malamika tipo ŝanĝiĝis" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Platforma rapido nun estas {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Resursoj reŝargiĝis" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="ERARO: malĝusta formo" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Ŝargiĝis mapo: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/es/strings.xml b/desktop_version/lang/es/strings.xml
index c2cfae35..30d4e8bd 100644
--- a/desktop_version/lang/es/strings.xml
+++ b/desktop_version/lang/es/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Tipo de enemigo cambiado" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="La velocidad plataforma es {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Recursos recargados" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="ERROR: Formato no válido" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Mapa cargado: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/es_419/strings.xml b/desktop_version/lang/es_419/strings.xml
index ea6a1cf9..9db8f633 100644
--- a/desktop_version/lang/es_419/strings.xml
+++ b/desktop_version/lang/es_419/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Tipo de enemigo cambiado" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Velocidad de las plataformas: {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Recursos recargados" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="ERROR: Formato no válido" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Mapa cargado: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/es_AR/strings.xml b/desktop_version/lang/es_AR/strings.xml
index e9bf98b1..befb125d 100644
--- a/desktop_version/lang/es_AR/strings.xml
+++ b/desktop_version/lang/es_AR/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Tipo de enemigo cambiado" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Velocidad de las plataformas: {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Recursos recargados" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="ERROR: Formato no válido" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Mapa cargado: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/fr/strings.xml b/desktop_version/lang/fr/strings.xml
index b7f69dc4..dc844ba6 100644
--- a/desktop_version/lang/fr/strings.xml
+++ b/desktop_version/lang/fr/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Type d&apos;ennemis modifié" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Vitesse des plateformes réglée sur {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Recharger les ressources" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="ERREUR : format invalide" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Carte chargée : {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/ga/strings.xml b/desktop_version/lang/ga/strings.xml
index bb19ca2c..f84a0bc0 100644
--- a/desktop_version/lang/ga/strings.xml
+++ b/desktop_version/lang/ga/strings.xml
@@ -630,6 +630,8 @@ Déan cóip chúltaca, ar eagla na heagla." explanation="translation maintenance
     <string english="Enemy Type Changed" translation="Athraíodh Cineál Naimhde" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Luas na n-ardán {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Athlódáladh acmhainní" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="EARRÁID: Formáid Neamhbhailí" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Mapa lódáilte: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/it/strings.xml b/desktop_version/lang/it/strings.xml
index 4a3c32f3..df4c8d1b 100644
--- a/desktop_version/lang/it/strings.xml
+++ b/desktop_version/lang/it/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Tipo di nemico cambiato" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="La velocità piattaforma ora è {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Risorse ricaricate" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="ERRORE: Formato non valido" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Mappa caricata: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/ja/strings.xml b/desktop_version/lang/ja/strings.xml
index 0586db9e..34daa1d0 100644
--- a/desktop_version/lang/ja/strings.xml
+++ b/desktop_version/lang/ja/strings.xml
@@ -664,6 +664,8 @@ Steam Deckには対応していません。" explanation="" max="38*5" max_local
     <string english="Enemy Type Changed" translation="敵の種類を変更しました" explanation="level editor, user changed enemy appearance for the room" max="38*3" max_local="38*2"/>
     <string english="Platform speed is now {speed}" translation="プラットフォームの速度を {speed} に変更しました" explanation="level editor, user changed speed of platforms for the room" max="38*3" max_local="38*2"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3" max_local="38*2"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3" max_local="38*2"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3" max_local="38*2"/>
     <string english="Reloaded resources" translation="リソースを再読み込みしました" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3" max_local="38*2"/>
     <string english="ERROR: Invalid format" translation="エラー: 無効な記述形式" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3" max_local="38*2"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="{filename}.vvvvvv をロードしました" explanation="successfully loaded level file" max="38*3" max_local="38*2"/>
diff --git a/desktop_version/lang/ko/strings.xml b/desktop_version/lang/ko/strings.xml
index 10ff2981..45917d61 100755
--- a/desktop_version/lang/ko/strings.xml
+++ b/desktop_version/lang/ko/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="적 종류 변경됨" explanation="level editor, user changed enemy appearance for the room" max="38*3" max_local="30*3"/>
     <string english="Platform speed is now {speed}" translation="플랫폼 속도 현재 {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3" max_local="30*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3" max_local="30*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3" max_local="30*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3" max_local="30*3"/>
     <string english="Reloaded resources" translation="자원 다시 불러오기" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3" max_local="30*3"/>
     <string english="ERROR: Invalid format" translation="오류: 이용 불가능한 포맷" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3" max_local="30*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="불러온 지도: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3" max_local="30*3"/>
diff --git a/desktop_version/lang/nl/strings.xml b/desktop_version/lang/nl/strings.xml
index 09a551ae..0b83968e 100644
--- a/desktop_version/lang/nl/strings.xml
+++ b/desktop_version/lang/nl/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Vijandtype aangepast" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Platformsnelheid is nu {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Bronnen opnieuw geladen" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="FOUT: Ongeldig formaat" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Level geladen: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/pl/strings.xml b/desktop_version/lang/pl/strings.xml
index c88a28fa..41c01df0 100644
--- a/desktop_version/lang/pl/strings.xml
+++ b/desktop_version/lang/pl/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Zmieniono Typ Wroga" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Prędkość platformy: {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Załadowano zasoby ponownie" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="BŁĄD: Niewłaściwy format" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Wczytano poziom: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/pt_BR/strings.xml b/desktop_version/lang/pt_BR/strings.xml
index dd5d677b..f14c977f 100644
--- a/desktop_version/lang/pt_BR/strings.xml
+++ b/desktop_version/lang/pt_BR/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="O tipo de inimigo foi alterado" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="A velocidade da plataforma agora é {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Recursos recarregados" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="ERRO: formato inválido" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Mapa carregado: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/pt_PT/strings.xml b/desktop_version/lang/pt_PT/strings.xml
index 51ca859b..083f57b4 100644
--- a/desktop_version/lang/pt_PT/strings.xml
+++ b/desktop_version/lang/pt_PT/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Tipo de inimigo alterado" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Velocidade atual da plataforma: {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Recursos recarregados" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="ERRO: Formato inválido" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Mapa carregado: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/ru/strings.xml b/desktop_version/lang/ru/strings.xml
index 3b310c88..7d6042ba 100644
--- a/desktop_version/lang/ru/strings.xml
+++ b/desktop_version/lang/ru/strings.xml
@@ -653,6 +653,8 @@
     <string english="Enemy Type Changed" translation="Тип врагов изменён" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Установлена скорость платформ {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Ресурсы перезагружены" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="ОШИБКА: Недопустимый формат" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Карта загружена: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/szl/strings.xml b/desktop_version/lang/szl/strings.xml
index 38640252..32d41ac6 100644
--- a/desktop_version/lang/szl/strings.xml
+++ b/desktop_version/lang/szl/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Zmiyniōno Zorta Niyprzŏciela" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Gibkoś platformy: {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Nafolowano zasoby drugi rŏz" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="FELER: Felerny format" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Nafolowano poziōm: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/tr/strings.xml b/desktop_version/lang/tr/strings.xml
index cd98037d..a2cbb074 100644
--- a/desktop_version/lang/tr/strings.xml
+++ b/desktop_version/lang/tr/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Düşman Türü Değişti" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Platform hızı: {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Kaynaklar tekrar yüklendi" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="HATA: Geçersiz format" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Yüklenen harita: {dosyaadi}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/uk/strings.xml b/desktop_version/lang/uk/strings.xml
index 33c6fa97..c6c12521 100644
--- a/desktop_version/lang/uk/strings.xml
+++ b/desktop_version/lang/uk/strings.xml
@@ -628,6 +628,8 @@
     <string english="Enemy Type Changed" translation="Тип ворога змінено" explanation="level editor, user changed enemy appearance for the room" max="38*3"/>
     <string english="Platform speed is now {speed}" translation="Тепер швидкість платформи {speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3"/>
     <string english="Reloaded resources" translation="Ресурси перезавантажено" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3"/>
     <string english="ERROR: Invalid format" translation="ПОМИЛКА: Неприпустимий формат" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="Завантажено мапу: {filename}.vvvvvv" explanation="successfully loaded level file" max="38*3"/>
diff --git a/desktop_version/lang/zh/strings.xml b/desktop_version/lang/zh/strings.xml
index a9b83ef0..e5fa526a 100644
--- a/desktop_version/lang/zh/strings.xml
+++ b/desktop_version/lang/zh/strings.xml
@@ -638,6 +638,8 @@
     <string english="Enemy Type Changed" translation="敌人类型已改变" explanation="level editor, user changed enemy appearance for the room" max="38*3" max_local="25*2"/>
     <string english="Platform speed is now {speed}" translation="平台速度现在为{speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3" max_local="25*2"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3" max_local="25*2"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3" max_local="25*2"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3" max_local="25*2"/>
     <string english="Reloaded resources" translation="资源已重新载入" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3" max_local="25*2"/>
     <string english="ERROR: Invalid format" translation="错误：格式不符合" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3" max_local="25*2"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="已载入地图：{filename}.vvvvvv" explanation="successfully loaded level file" max="38*3" max_local="25*2"/>
diff --git a/desktop_version/lang/zh_TW/strings.xml b/desktop_version/lang/zh_TW/strings.xml
index 9d58c94e..62c5e649 100644
--- a/desktop_version/lang/zh_TW/strings.xml
+++ b/desktop_version/lang/zh_TW/strings.xml
@@ -638,6 +638,8 @@
     <string english="Enemy Type Changed" translation="敵人類型已改變" explanation="level editor, user changed enemy appearance for the room" max="38*3" max_local="25*2"/>
     <string english="Platform speed is now {speed}" translation="平臺速度現在為{speed}" explanation="level editor, user changed speed of platforms for the room" max="38*3" max_local="25*2"/>
     <string english="Enemy speed is now {speed}" translation="" explanation="level editor, user changed speed of enemies for the room" max="38*3" max_local="25*2"/>
+    <string english="ERROR: Nothing to undo" translation="" explanation="level editor, user tried to undo with nothing to undo" max="38*3" max_local="25*2"/>
+    <string english="ERROR: Nothing to redo" translation="" explanation="level editor, user tried to redo with nothing to redo" max="38*3" max_local="25*2"/>
     <string english="Reloaded resources" translation="資源已重新載入" explanation="level editor, reloaded graphics assets/resources, music and sound effects" max="38*3" max_local="25*2"/>
     <string english="ERROR: Invalid format" translation="錯誤：格式不符合" explanation="user was supposed to enter something like `12,12`, but entered `as@df`" max="38*3" max_local="25*2"/>
     <string english="Loaded map: {filename}.vvvvvv" translation="已載入地圖：{filename}.vvvvvv" explanation="successfully loaded level file" max="38*3" max_local="25*2"/>