Yeah the crashreport is without the 'fix', so basically the same version I sent you in PM a few days ago.
I've been using my 'fixed' version (which doesn't seem to crash).
Hmm, I see... I'm guessing it's the texture uploading... (8192x4096 textures...
)
EDIT:
Would it be possible to increase the uploading speed to GPU? Maybe with a bigger buffer size or something?