fix for error messages

src/main.cpp

@@ -23,6 +23,7 @@
 \******************************************************************************/
 
 #include <qapplication.h>
+#include <qmessagebox.h>
 #include <iostream>
 #include "global.h"
 #include "llconclientdlg.h"
@@ -112,6 +113,8 @@ cerr << "logging ";
     extern int qInitResources();
     qInitResources();
 
+    try
+    {
         if ( bIsClient )
         {
             // client
@@ -169,6 +172,20 @@ cerr << "logging ";
                 app.exec();
             }
         }
+    }
+
+    catch ( CGenErr generr )
+    {
+        // show generic error
+        if ( bUseGUI )
+        {
+            QMessageBox::critical ( 0, APP_NAME, generr.strError, "Quit", 0 );
+        }
+        else
+        {
+            qDebug() << generr.strError;
+        }
+    }
 
     return 0;
 }