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If you are in mid-production with Mental Ray within 3ds Max 2018, and all is working well for you, we recommend that you wait for this update and do not uninstall as instructed above.Jon A. Such files will work correctly with the next Mental Ray for 3ds Max update, scheduled for the week of May 22, 2017.
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Download the new Mental Ray from 3ds Maxposted on and install it.ģds Max 2018 will now be backwards compatible with earlier releases, and saving to earlier 3ds Max versions will work fine.ģds Max 2018 scenes edited recently while using the first Mental Ray for 3ds Max will not be compatible with this update. Loading scenes from an earlier 3ds Max version may result in their materials not being recognized in 3ds Max 2018, and scenes saved to an earlier 3ds Max version can also have difficulty with their materials not being recognized in the earlier 3ds Max.
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NVIDIA has confirmed a critical backwards compatibility issue when loading scenes using certain materials with the Mental Ray for 3ds Max that shipped on May 10, 2017. We have version 1.3 available via our website, and the 2018-compatible version is presently in internal testing for release "soon". Regarding your specific question, the Iray+ Material is part of Iray for 3ds Max. This tool will alert you when updates are available and will download and install them automatically if you choose. Hopefully you noticed the Professional Application Center installed with the renderer. (Contact us there if you'd like to participate.) Furthermore, we are also continuing our beta program and have committed ourselves to turning around new releases at a rapid pace. We have several similar threads already and will post official solutions there. ( NVIDIA Mental Ray for 3ds Max forum) We can respond there more quickly and not completely hijack Autodesk's space. Please do continue to find out "what could happen more?" and come to our forum and report your successes and any problems you find. We obviously missed some issues in our first release.
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