gmod crashes EVERY time i load single player maps, only way around this is to disable All addons (which destroys the entire idea of gmod for me) gmod takes forever to disable/enable a single mod so doing so one by one is just not practical.
BUT i can load servers no problem when i try to go online.
MY SPECS=
OS WINDOWS 8.1 64bit
CPU INTEL i7-4790K @4GHz
GPU GeForce GTX 980
GPU-MEM 4GB
RES. 1920X1080 @144Hz
RAM DDR3 8GB @2133
Yeah, I think that one of your addons isn’t working properly. I’d suggest try disabling all, and enable small groups at a time, trying to pinpoint the bad addon. I know its going to be slow, but it might work.