Vray error - "UNHANDLED EXCEPTION: image prepass"

[ABK]

Hi All,

 

Has anyone encountered this type of error before?

 

I've got over the problem by merging everything into a new scene but would be good to know where the problem came from.

 

Antony

[Tommy L]

VRay isnt happy. It may have run out of RAM or there may be a corrupt object in your scene. Sounds like the latter if a merge to fresh scene resolved the problem.

[Scott Schroeder]

Follow the standard process for checking your scene. Start removing things from your scene in a logical progression.

 

#1, use an override material to remove any and all materials being rendered. A 128 gray vray material will suffice. Do you still get the error? If so, the error is *probably not in your materials. Move to step 2.

 

*I say probably because the override material only loads at render time. If you truly want to remove materials from the equation, save a copy as a scene and actually apply the vray gray material to everything.

 

#2, turn off all of your lights in the vray global override. Do you still get the error? Yes? No? If you still get the error, it's not in your lights.

 

#3, start turning off chunks of geometry. I usually just throw them onto their own layer so I can keep track of what I just turned off. If after a chunk of geometry gets turned off and the error goes away, the issue probably lies within those pieces.

[Chris MacDonald]

Some more info would be good, perhaps post the vraylog.txt?