Its black and purple?

yes.

Right do you mind downloading all the models and textures again from this server and any other servers you go on, if you dont mind go to your team fortress 2 folder and in the tf folder there is a download folder, if you open that and delate the materials folder that should make the game redownload the materials needed, and if that doesnt work just delate the entire downloads folder, yes this will make you have to download everything again so just alt tab while its downloading and watch one of our fantastic custom weapons demstraions

alright thanks it works now! awesome!