Addons not loading, Game goes not responding when i click things.

[rileycatcat]

When i try to join a server it makes my game go not responding. And no add-ons are showing up at all.

Specs

GPU - GTX 660 2GB
CPU - FX-6300 @ 3.5Ghz
RAM - 8gb

^Before anyone asks.

[rileycatcat]

Anyone?