Sorry to bring up this old thread. I run into problem when apply
this shader to my model :

Malfunction W1550
-----------------
normalMapping(4): error X3000: syntax error: unexptected token 'mtl_bump'
(15):error X1005: string continues past end of line
(16):error X1507: failed to open source file: 'fog'

>MATERIAL mtl_bump<

Any ideas?