Garry's Mod graphical problem

[AnthonTheSkabot]

I was playing Garry's Mod and my weapon texture was stretched out to a point in the middle of the map also the background buildings were multicolored,please help me out

 

[The Unworthy Gentleman]

Have you tried the Facepunch forums? They'll be able to help you much more than we can.

EDIT: Also, I have no idea how to fix that. The only problem I've ever had with GM is having my addon guns shoot errors.