When I install Vray rc3 over existing rc2 I get message
“Invalid license: Bad checksum. The license seams to have been modified. Please try copying it again.. -19”
I never got this message when I was installing older versions.
What should I do.
You should request a new authorization code.
Best regards,
Vlado
I did the same minute, but I didnt get reply from chaosgroup.
You should have a reply now.
Best regards,
Vlado
I got new license and I have instaled it but now I have other problem.
The rendering freezes when I press cancel during lightcache calculation.
I have to use taskmanager to kill Max process and restart max again.
How do I install rc2 again becouse it doesnt work again.
Now I am stuck. 
By the way I made a test and other scenes are working fine but this one is crashing even when I use overide materials in VFB.
In that case it would probably be best to send a copy of that scene to vlado@chaosgroup.com so that I can take a look. It’s hard to say what may be wrong right away.
Best regards,
Vlado