I have found a bug that causes my game to quit if i try to go to fullscreen. I have also recently updated my OSX to 10.8.4 so this could be an incompatiblity issue. I am currently using TPT 87.2.
It will be fixed when Simon decides to update to SDL 1.2.15 instead of SDL 1.2.13. This is an SDL bug, but he hasn't updated it, and I haven't had a chance to ask him to update it (maybe since he hasn't been here in 6 weeks. He came back but hasn't been here for 2 days now |: ).