my Gmod keeps on crashing when i play all Counter Strike maps

ok so heres whats the problem here when ever i load a map from Counter Strike my game crashes, but the strange thing is that it says it . I dont know what this means but i dont think its good.

Here are the maps that I know this anomoly happens on.
cs_italy
de_dust
de_aztec
de_cbble
cs_office
de_chateau
de_dust2
de_piranesi
cs_havana
de_prodigy
cs_compound
de_train
de_tides
de_port
de_inferno
cs_assault
de_nuke
cs_militia

all of these im having trouble with and its starting to get on my last nerve. Some might work but i dont know as i have not tested all of them.