Custom weapon model not rendering.

So recently I’ve been trying to code a grease gun into gmod, but I’ve ran into a snag, the model won’t load and I keep getting: <Error Vertex File for ‘weapons\w_thompson.mdl’ checksum 73876578 should be 2011868197> spammed in my console.

I’ve been using this skin: http://gamebanana.com/dods/skins/58135

Here is the shared.lua: http://pastebin.com/C3b6Uw9X

Do any of you have an idea of what is going on?

It has to do with the .mdl file itself.

Are you certain you have all the extra files (.vvd, .dx80.vtx, etc.)?

And did you properly Hex it?

Hexing the model? How can I do this?

[editline]27th June 2012[/editline]

Also, the firing noise doesn’t work