Allrighty, I've thrown some of env_cubemaps to my first map for some nice reflections. Launching game, sv_cheats 1, mat_specular 0, map mymapname, buildcubemaps, game crashes :O If I understand correctly, some random images should flicker, but nothing such happens, so I guess the game didn't even start to build them. The error says something about cannot reading the memory adress, but I'm 99,9% sure that my RAM is fine and I have whole 1,75 gigs of it. I'm playing with Quantum's Ultra High FPS config, because everything else on this PC is crappy (it's 5 years old, but with this config TF2 is running ~25 FPS), could this be the source of problem?