Trouble-shooting and NGX messages
 Nothing happens when the hotkey is pressed
 Beeps
 Can't run in this video mode
 Program not installed
 Can't uninstall
 Already installed
 Program code corrupted. Aborted.
 Bad keyword / value / keyword already used (line xxx), Too many errors
 Cannot open file
 Seek/read error
 Not an .NG database
 Bad menu structure
 Bad structure ID
 Output error
 Not all menus read
 Entry too large