I Fucked Up My Garry's Mod :<

Hia guys so I downloaded this fps booster which caused my textures and ect to fuck up and some reason I cant seem to change it back and the issues are.

-Glass Looks Fucked up (http://steamcommunity.com/sharedfiles/filedetails/?id=21952161
-Zombie Survival teammates playermodel turns white when I flash it at them. (http://steamcommunity.com/sharedfiles/filedetails/?id=219521612)
-Graphics are fucked up.

Ive tried typeing “exec default” In console but it didnt really fix anything so im not sure what I should do next. I also also typed “unbind all” Im not sure what the issue is I just wanna change everything back to default so if anyone here can help me then thanks <3.

Oh btw I did reinstall gmod and all of its contents.

(User was banned for this post ("missed the help and support section" - postal))