I can't freeze stuff with the Physgun.

I was just gifted GMod, and I’ve been playing around with it for an hour now. But something’s wrong, because if I’m holding a ragdoll with the Physgun, and right click, nothing happens. I’m using a normal mouse(3 buttons and wheel). I’ve also tried resetting to default keys in the settings, but still nothing.

What should I do? Is there some log I can provide?

Thank you.

[SUP]I posted this exact post on another forum too.[/SUP]