Thanks for the info. I can get the Special Infected in easily enough, but they are all pink hued and I get spammed with messages like
Material models/infected/hulk/hulk_01 does not support vertex format used by the mesh (maybe missing fields or mismatched vertex compression?), mesh will not be rendered. Grab a programmer!
Maybe it's the BBQ or one of the other shader parameters. All my custom assets work fine.
I tried opening my bsp which is a whole other story. It acts like it loads it (it's pretty big) but after all that time, it comes back with No Map Loaded, presumably because tf2 can't run it. So I figured I'll need to recompile a copy specifically for it.