Hi,
got my car paint pretty sorted , hit render and them ^&*^%*% spots appeared, using all vray mats, vray lights etc, no bitmaps, no lights intersecting geometry, had a similar prob a while back but that was corrected when I checked the override mat IOR for the fresnel reflection. ( 
Candelero) This time I am using Perp/paraller so thats no longer an option, (regardless It still happens with Fresnel)
Have looked on Forum seem to be going around in circles, am using 1.48.03
thansk guys for any help,
Tom
Post a shot from the Falloff map,
If it is a Fresnel one - make sure the Check-box : Override IOR is ON !
Best regards,
nikki Candelero
sorted,
thanks Candelero for solving.
Solution: FYI
Remove camera correction (even if you are rendering a perspective view of the camera viewport :? )
OR
check off the Max-Shade compatible checkbox in the Vray System rollout
Tom