Reality Factory

I've been like two months working on a level, adding details and textures and whatnot, when suddenly I turn it off, add a texture to the .txl, try to open the level, and DUM it closes. I try and try, try changing the level's name, reinstalling RF and copying the actors/install folder/scripts and txl and nothing. I try opening it with the default .txl and without any txl and nothin will work. Please help me.

Thanks, but I managed to get the level back by opening it in RF 0.76, eliminating an actor that apparently was the responsible for the crash, and opening it again in RF 0.75