TDMCars Crashing Players Problem

Some of my players are crashing with “failed to lock vertex buffer in CMeshDX8::LockVertexBuffer:”.
The problem is TDMCars. I have deleted it and ALL the users that were having this problem now can get back in.

Do you have TDM on a FastDL or do the players have TDM cars installed?

I have TDMCars on my server and TDMCars on the workshop in my collection. It seems that after revision 45 (SVN) this started happening.