Sorry for the delay to respond; I'm out-of-town, and I haven't played since (of course, game crashes when I try to play it now anyway because of video driver issue or whatever is doing that). Well, the .ini file doesn't necessarily get quickly corrupted, but it eventually gets corrupted in some way. Usually, this happens when I play an online match where the connection is lost before the match starts (although sometimes this doesn't cause a problem with the file). When I then try to start another match, my players may be the players from the other person's configuration, etc. I usually then just open my backup .ini file and either correct the corrupt file by copying and pasting sections or just delete it and restore my backup. I haven't tried using the tennis.ini file. Sometimes, I think often, the .ini file gets jumbled, but this doesn't seem to cause an issue, normally; what I mean by jumbled is that the order of settings in a section, such as the section Game, will be changed from what it was orginally. This has always happened, as far as I know. There also are these little square symbols in the files and also lines that are blank except for = 1. I think this has always been the case, also, even when the game is first installed. I've never understood this.