it renders fine when in progressive preview, but it won't render to mplay or to harddrive.
the skinshadercore keep saying:

Errors or warnings encountered during VEX compile:
/mat/skinshadercore1/pbrdiffuse1: Global variable I is not defined in the Displacement context. The value may be ill-defined. (11,34)

I didn't do anything to the internal network, yet it has this error, how do I fix this? thank you.

well, it would seem that I have solved the problem by manually adding the displacement global variable to the shading network tabs