The latest nVidia driver update is not fully compatible with OpenCL, therefore dForce assets will not work.  I have tried fall-back to CPU settings, but dForce simulation still cannot complete correctly.  Unless nVidia fixes this, dForce content is unusable. 

Personally, I will not be rolling back to an earlier version of the nVidia drivers because I'm using other software which uses newer drivers.

Eternal Hobbyist