Error: Preparing tone operator ?

Hello friends !

Today I’ve got in my scene file an error message during the render process with vray.

Max crahses all the time, and I can see that it stops working when it says:
Preparing tone operator…

Does anyone have any idea what it means ?
And which object, or material makes this problem ?

thx a lot for every little help,
Bernhard

Do you have any Exposure control set in the Environment dialog?

Best regards,
Vlado

I think it´s RPC. Take a look here, or do a search for Tone operator…

http://www.chaosgroup.com/forum/phpBB2/viewtopic.php?t=18656&highlight=tone+operator

Regards,
August