Error Messages

[redboot]

I'm suddenly getting some weird error messages in my games, rendering them unplayable.  When I get an emailed file from an opponent and try to save over the old file, I get a message that I don't have permission to open the file.  If I save it under a different name, I can open the file and even play my turn, but when I try to end my turn, I get a "Cannot open file" error message and it doesn't end the turn.  If I try to save that game mid-turn, I also get the "Cannot Open File" message.  As a result, I can't play my turn.

This has happened with three opponents' files so far.  Two with Smolensk and one with Korsun.  Curiously, everything seems to work fine with another game I have going with Tunisia.

So the problem is definitely on my end, but I have no idea what to do.  I'd appreciate any help.

Regards, redboot.