I using the extra tex option to make an AO pass, but I’ve run into a problem.
When A vray light is enabled it seems to be treated as an actual object? The only way to get rid of the AO that’s cast by the light is to disable it, which isn’t really ideal.
Make the light invisible to the camera and turn on the “work with transparency” option in VRayDirt.
Best regards,
Vlado
As always, thanks for your quick reply!
It works 
I was wondering about this as well. Thanks for the tip!