Checksum errors in BoN

[phoenix]

I believe I got that error when, half way through doing my PBEM move I broke off, and selected 'PBEM Encryption' from the settings drop down. I had forgot to select it at start, remembered, selected it mid game. Then, immediately afterwards, I saved the game half way through my move, left it. Came back to it and got the checksum errors you mention saying files had been altered. It may be that selecting 'PBEM Encryption' half way through the move had nothing to do with it, but I mention it here because that was the order of actions which led to the errors, so as those who might wish to check out this problem know.

Peter