BULUW
1
3DS MAX crash when use lightmix:
set up lightmix>bake to scene>Render setup>Render Elements>turn off active>Press Render>CRASH
turn off elements active or delet all lightmix>start IPR>VFB shows no lightmix>stop IPR>Press render>no crash
Is this a VFB bug or lightmix bug?
win10 64bit 3ds max 2017/2018
Confirmed - attaching the ever-useful minidump 
Note that I set up LightMix by running IR, and baked while that was running (just in case those steps play any part in it)
LightMix Bake and Turn Off Render Elements Crash 3dsmax_minidump.zip (1.39 MB)
maru
3
(internal note: id=250737693)