How to port models from L4D2?

I want to port some custom model from L4D2 to GMOD.
When I use it without recompiling, it stuck on T-pose.
When I recompile it using Crowbar without ticking ‘Define Bones’, I’m getting the same picture.
When I recompile it with ticking ‘Define Bones’, I get nothing. Nothing shows up in target folder. I don’t get any kind of error or warning.

What I’m doing wrong? May be there are some extra things for L4D2 models?