I deleted those files in the dynamic directory (though the only file in those directories was the dontremove.txt file). That did not fix the problem. I just started a new game but haven't had a chance to get far enough to check the bug again. I'll let you know what happens.

On a slightly different note, I did notice that when I loaded a game, that it says the versions of my saved games are 1.47...not 1.49 which is the patch I installed. I know that patch is installed since I can now play without the CD being in the drive. Is this normal?