Did you look at the event log? program and system errors usually log an event that gives a clue. Go to Control Panel\All Control Panel Items\Administrative Tools\Event Viewer and select Windows Logs, then look in Application and System logs for error entries logged at the time your program malfunctioned. This may give you a clue as to what happened. You can copy and paste the event content into a bug report. That should help the programmer determine what is wrong.