ok, ive tidied up the map a bit, removed some dodgy brushes that were stopping the map from compiling (two wooden beams in the attic-like bit had vertex errors), but for some reason the map causes CS to crash when i try to run it, in normal CS it quits to the desktop and with Steam-CS it performs an illegal operation, and i have no idea why

pierre, may i ask which WAD you used to texture it? it wasnt any of the original CS wads and im curious to see how you textured the cathedral, i had to texture the thing from scratch cos all the walls were white for me