vray is disappearing after few renders

hello

I got problem with this and only solution how to correct it is ,escape from viz ( in my case ) unplug dongle and than plug in back.
Can you help me with this strange thing ?

Which V-Ray version is this?

Best regards,
Vlado

2 vlado :

hi

it is a 1.5 sp1 for max8 86x, but iam using it at viz 2006 sp1

Things you can try is to plug the dongle into a different USB port, and also install the latest WIBU drivers from http://wibu.com/download\_user.php?lang=en and see if this works.

Best regards,
Vlado

2 vlado :

thanks for help, it seems that change of usb port helped out :slight_smile:

2 all :

well i discovered problem,is it in my mobo especially usb ports , mobo dont giving right power to the devices through the usb ports , i found it when i plug in usb drive and OS dont find it.