Hi Ron,
The "game data directory" is where is where info is stored, you can find the location for this off the Directories button in the Administration page.
If player #5 is blowing up, it is most likely repeatable. (meaning if you load the game again it explodes in the same way). It would be great if you could make an archive of the game and sent it to me. To make an archive, you go to the Load Game screen off of the main menu, and for the entry in questions you should see an "A" button. That will make an archive which you can find in the "game Data Directory"/archives. Zip that and send it to me and I will see what the issue is. Usually I can get the game back going.
The logs may be useful, you can find those in the "Game Data Directory"/logs directory. If you zip the whole log dir I can sort it out.
--Mark