Even that doesn't matter (aside that this is just not a good idea to do but... whatever). I don't remember rev120 well enough, but I know that I have been having this crash with SDLs 1.1, 1.2, 1.3 and 1.4. Sometimes ground effects were messed up after 1st save, sometimes after 5th safe. Just try to do what Ascathos found out. It will make crashes stop and yes, you can get those crashes with all Noggit versions, there are dozens of help request topic with this crash and with all possible Noggit (at least SDLs for sure) versions being used.