https://obsproject.com/forum/threads/texture-map-error-read-this-first.29014/
Sticky thread about your issue.
Yup, I also had this problem after upgrading to the latest version .659b tonight. OBS-MP still works fine without throwing this error *while OBS classic was repeatedly crashing literally instantly after pressing start streaming*. I think if my GPU / driver was actually crashing, it would crash other versions of OBS running concurrently!
Edit: Reverted to .658b. An hour into streaming, crashing is fixed.
If you're all using nvidia video cards, try with the 369.15 driver pack.