Garry's mod Engine Error.

[Alexai]

Hello,

I re-installed Gmod on my new PC and when I join a server it crashes back to the desktop, giving me a source engine error ;

'failed to lock vertex buffer in CMeshDX8::LockVertexBuffer:nVertexCount=336'

I don't know how to solve this, so far I've :

- Verified my Cache.
- Emptied the addons folder (Maybe due to a corrupt addon.)
- Re-installed the game
- Tried many options with the launch settings.

So I'm here to ask for help. Thanks.