Vray 5 with Max 2021 won't render scene

[Shawkins_Method]

I've got some sort of corruption happening in my Vray 5 update 1 and Max 2021 update 3 file. It's a simple scene with all grey scale materials. I hit render and the progress window pops up for about 5 seconds then disappears. Nothing happens. I've converted all materials to vray and am using bucket rendering. I've had a little success in renaming the max ENU file so when i open max again it creates the new ENU file and that worked a couple times but then i imported some Revit geometry and i'm back to the crashes. If i change the renderer to Arnold then the scene seems to render since i get the normal progress bar but it doesn't recognize the vray lights....... It seems as though Vray doesn't like something coming in from Revit. Thoughts???? I'm really at a loss.

[Shawkins_Method]

Some new information...The file we're trying to render came from a 3rd party. We have 2 computers trying to render the scene. Scene renders fine on the other machine but not my machine. I have the same version/updates of max and vray on my machine as the 3rd party who obviously can render the file but i can't. One strange thing is that on my machine i can render the scene with IPR but not with bucket rendering. Any thoughts from anyone?

[matanov]

If it's crashing, there should be a crash dump file in the temp folder. Please send it over email to support@chaosgroup.com

[bildform]

I had something similar happen to one of my scenes. In the end I had to delete a corrupted object. Finding it took a little while. I went by layer by layer and then half and half until only one object was left.