Sorry to hear you're facing these problems. If problem appear using the mental ray renderer (if not, please specify renderer used and its release), I would suggest you try an experimental mode, that has been implemented in that version. (*) Added experimental memory management for Mental Ray rendering. It can be enabled by setting MentalRayDirectMode=1
. It should be modified on all involved render nodes.
Let me add, that unfortunately the mental ray integration is overall problematic as for example mentioned in this post
regarding another topic (an older issue):
"Well, the real problem with Mental Ray is that it is not an Autodesk product either. The engine was originally developed by Mental Images, and recently purchased by NVidia. Unfortunately the integration with Max always was very problematic (and is not very well documented). Probably this is the reason that 80% of our customers use other render engines (V-Ray mainly)."
Unfortunately, there is not much more we can do about it. Our main developers tried many ways to make it work, but as you've reported it continues crashing. Feel free to check another post
related to the mental ray renderer issues:
"Regarding Mental Ray, from our data we know that it's barely used by our customers. Most of them use V-Ray, Corona and other renderers. Probably it's not only a technical question, but also the lack of support from Autodesk. Mental Ray is not a bad product, but is poorly integrated with Max, and when a problem arises there is not anyone to ask for help."
Please let us know that's all working fine or you are still facing troubles with it.