"Access Violation"

[Mobhack]

If the supplied scenarios etc all load fine, with the supplied stock OOBs then there maybe a problem with your custom stuff.

Have you tried clearing any scenario introductions (those may have illegal characters in there, not just unit OOB text files), in fact ensure any of your new scenarios text files of any description dont have non standard ASCII.

Also, focus on any Icons you have made yourself. If scenarios (or a generated battle using them) that try to use your new stuff cause a crash then you may have a bad Icon in there.

However if they were working before - then go back to whatever you last did for customisation - a new text file, new OOB, or new icons you added lately.

I would firstly run the windows disk checking utility to see if you had errors, though. Perhaps run a bad sector check as well, overnight since the surface test takes forever. (One way to check that would be to copy the entire game over to a new folder elsewhere, and see if it starts to work in the new location, sometimes that will recover from a disk error, if the files themselves weren't too damaged).