Hi
One of our workstations appears to have a problem where by the material editor does not render the preview window, it leaves it black and when you switch renderer to scanline or mental ray it begins to work.
Has anyone enncountered this problem and is there a work around?
System specs…
max 9 in both 32 and 64bit and the latest VRay1.5 final release both 32 and 64, with the dongle on vista ultimate 64bit with an 8800gtx.
Have you selected V-Ray as the renderer? Also, did you select V-Ray as the material editor renderer as well?
Best regards,
Vlado
Also, did you select V-Ray as the material editor renderer as well?
is this option only in the final release…never heard of that before.
-joe
No of course. In 3ds Max, where you assign V-Ray as the current renderer, there are, in fact, three renderers that you can assign - a Production renderer, a Material Editor renderer, and an ActiveShade renderer. Normally, the Material Editor renderer is locked to the Production one, but they could be unlocked by mistake.
Best regards,
Vlado
Yep they are selected, which is the default, also forgot to mention that max is installed with sp2 and the productivity booster.
sounds like you either set the mateditor renderer wrong in the preferences or dont have a vray license available.
I thought the dongle took care of the license issue? and was not an issue before with RC3, and everything else is working.
Are you guys running vista 64 and have you noticed any gremlins in it?
am sure Vlado has tested it on all available platforms. 
Must be new machine teething problems.
might try with a different dongle to see if it persists.
If you are able to do a normal rendering, then the material editor should be working as well. If you get a “Cannot obtain license” error when you try to render a full image, then the license has not been set up correctly (e.g. the license server was not found, it was not running, the dongle was not plugged in or the dongle drivers have not been installed).
Best regards,
Vlado
the simplist way to tell if the lisence is working is to open the vray render pannel. if its not working then no settings will show up. sometimes when i take my dongle to school with me when im teaching i sometimes forget to plug it back in.
Nope non of those problems, just completed a render at 5000 x 3350. Have been using both the 32 and 64 bit versions with no problems at all, bar the materialthingymacwhatsits.
Well, for some reason it is working now.
Don’t know what I did, don’t think I did anything.
Thanks for all your help all the same 
we are having similar issues…
we have two licenses, two dongles…
we “sometimes” get cannot obtain license… at different times… same thing for the material editor slots going black…
we have each posted our alternate server as eachother… but both are primaries are set to our respective local machine…
i know Im not an expert on these dongles… but have never had issues with others quite like these…
lost without vray,
Arkitec
ps. the reason posting this was that vray wasnt working… just tried it again before hitting enter…
its back!
Something is wrong with these dongles… as it cant be the setup since it does work…
There have been some reports of this happening; we’ve tried to make the license more robust and less error-prone, which should hopefully help to make things more stable.
Best regards,
Vlado
Vlado -
Well I guess thats good to hear for future dongles or updates to the software… but what are we suppose to do now?
Respectfully,
Arkitec
Same problems. My material editor hangs for half-minutes on end and then renders black, always because It loses my dongle. If I wait a few minutes, it usually comes back…only surefire solution so far.
-Colin
You can of course email me for an update; the service pack is also coming along; as a last resort, you can turn off v-ray for the material editor.
Best regards,
Vlado
GREAT NEWS Vlado!!!
Thank you for the quick reply
Arkitec