As in the title. In such conditions I get errors when moving time slider during IPR:
Simplified scene:
The rendering of the frame sequence stops after a few frames (in more complex scene than I attach here).
MB error.zip (69 KB)
I can’t repro it here with your scene.
Try a recent nightly, perhaps?
If that fails, you can turn embree off via maxscript: with v-ray as renderer run this
renderers.current.system_embree_moblur=false
and you’ll be using the V-Ray BSP raycaster instead for motion blur.