Hi,
The error message displayed on the screen is only a short summary.
If you look in the drive letter:\path to\AURAN\ folder, view the "jetlog.txt" file. Scroll down to the end, and you will see what happened just before the program halted.
(note - the file is overwritten everytime you run TRAINZ).
I had a case where the horn sound was called - just before the crash.
this identified the locomotive that was part of the problem - remove the loco - no problem.
HTH
Colin
Very useful! I must remember this.