I was playing the first part of 400 Days and decided to call it quits for the night after beating one of the episodes. The first thing I noticed after opening up the game the next day was the fact that it opened windowed and in another resolution, and then it asked me if I wanted to play with the standard or minimal UI. Saves didn't show up when I went to check, so I tried a few of the 'solutions' on the TTG support forums. Needless to say, none of them worked. The biggest problem would probably be the fact that I could not locate the prefs.prop file inside the app (right click, show package contents, etc).
I've already turned off steam syncing, but I'd rather not replay the game again. Thanks for your help!