My Npc's broke!

The combine, rebels, civilians and refugees just stand there with their arms out! Any ideas on how to fix this?

P.S. Every other npc works fine, but doesn’t do damage.

Have you doenloaded any addons?

Have you played online?

And did you pirate it (Be honest and I’ll give you a cookie)

Those are my questions.

If he’s honest he gets banned for warez I think