Vray RT and "Rendering is not re-entrant"

[mr furious]

so i'm using RT all is good.. then for some unknown reason it stops working and i get "Rendering is not re-entrant". and RT no worky? only thing that works is restart maya?

thoughts?

simple scene with basic shaders.

A

[mr furious]

and software vray no worky... restart ... poo

[t.petrov]

Hi,

We've seen this problem, but we can't get a 100% reproducible steps.
Can you depict the steps needed to make V-Ray stop working in this unpleasant way?

/Teodor

[Richard7666]

I'm having this too now. Can't even render. Not sure what to do, it appeared out of nowhere.

Maya itself is playing up though (hanging on start-up for a long time), so will try reinstalling that.

[Morbid Angel]

I'm having this too now. Can't even render. Not sure what to do, it appeared out of nowhere.

Maya itself is playing up though (hanging on start-up for a long time), so will try reinstalling that.

I think the first step would be to just clear your user prefs/profile and see if that helps...if not then reinstall...

[ajlbeer]

I am on the latest nightly build 22593, and I must say Vray RT is getting really usable. It is a real kick in the pants to see it take advantage of our renderfarm when I tick the distributed render box. Wow!

Only problem, I get the issue with "Rendering is not re-entrant" as well. It seems to happen after I have done one too many restarts of RT. So for example, I was testing out vray fur, changed a bunch of fur attributes, then a bunch of hair3mtl attributes, then added a light. Stopped RT, did brought in an HDR for the dome light I was using, noticed that it was not working so well with distributed rendering and shut down RT again. When I tried to launch RT again, I got "Rendering is not re-entrant". Even if trying to do a regular non-RT render. If I save the scene, quit out of maya and restart, all is well but inevitably it will hit the "Rendering is not re-entrant" error again.

Is there a way to reset without restarting Maya perhaps?

[Morbid Angel]

better option would be to make a memory dump of your maya/vray.exe memory during this error message (you can use windows task manager or windows process explorer) and send that info to vray guys.

[ajlbeer]

Thanks Dmitry! I'll give that a go.

Oh, by the way. I've got both a Maya and Vray dump after this event. Forgive me for sounding like a complete newb, but should I post it here or is there a more appropriate support email I should use? Forgive me, we are a very, very, very small company

[vlado]

I think, that we managed to solve this particular problem with the nightly builds, so you might give them a try.

Best regards,
Vlado

[Metzger]

Wondering if I am having this same issue, I downloaded and installed a newer nightly build and it didn't fix the problem.

[Dariusz Makowski (Dadal)]

As far as I know from my own issues with that command is that it always pop up when Maya is rendering. So since GUI is not locked and I can change settings during the render, sometimes when render finish I click re render -then I get error and its because Maya is finishing off/saving files. I usually just wait few secs and I can render again.