This is still an issue. I just updated to the very latest NVIDIA drivers and 3dsmax 2018 update 3 and Octane last version.
No change. Any attempt to ADD UVW to any scene, even just an empty scene with ONE object, immediately takes down the entire 3dsmax session hard. Can you please look into this asap. It is very frustrating.
It only happens with LIVE VIEWER OPEN, and only if it is running. If you PAUSE the LIVE VIEWER, then add the UVW MAP, and then unpause it, it is fine.