Thanks for reporting! I’ll talk to the dev team about this.
Can you give me more details about how to reproduce? I’m assuming you’re on the latest version of XMesh, but does it fail when exporting everything? Like, if I made a cube and exported it, would that trigger this issue? Also, what version of Windows is this running on? From the stack trace it looks like it’s failing when spawning a thread.
We got a same issue here, it was only occasional until maya2017 I would say, but now it’s way more frequent.
It’s really hard to track. Appears to happen a lot more on Win10 compared to Win7.
This is seems related to big scenes combined with low memory available on the computer. “Pausing” the viewport (new option in maya2017+, 10 years after everybody else) does not make a difference.
Sorry that far from being a repro case… I have to say I have a hard time reproducing it myself