There's } bracket unneeded, remove it. Check syntax

"Protected" model. The author clearly don't want it be stolen

Reduce poly count

Originally posted by Helghast:

What are my options? Re-rig the entire thing with a valvebiped skeleton?

Yes

Simple rename won't suffice

>$texrendermode

Your model compiler doesn't support it

Figure out where the "Shelf.smd" actually located relative to .qc file location. Fix all paths references.

Also, you can't have both $model and $body, leave only one. If it's something simple, leave only $body

You can't have $staticprop with $bodygroup's, it gonna glitch

$cdmaterials “VTFEditPNG\” tells to look for vmts in garrysmod/materials/VTFEditPNG/ or in <your_addon_name>/materials/VTFEditPNG/. Be mindful of what you intent.

Comments are not stored into final mdl. That's their purpose, to show some information that doesn't break syntax, or switch off parts of unneeded code.

If you want to keep them, then back up source files.

You have both $include "DefineBones.qci" (the times!!!) and $definebone lines. Keep only one variant

Uncheck definebone checkbox