Help with custom props

[The Supreme Meme Lord™]

So, I am trying to get my custom props to load into hammer, but they appear completely invisible, even in the model browser. The texture is formatted correctly, the wireframe and collision model are there, it's just gone. When I compile the QC file, I get no errors and it looks identical to a model I had previously got working. Help would be appreciated, let me know if I need to provide files.

 

[Pocket]

What happens when you try to load it in HLMV? Specifically, does it complain about any missing files, or say you have 0 triangles? I've definitely had this happen before, and off the top of my head I don't remember what it turns out I did wrong, but maybe we can figure it out.