The Gamma issue is still related to rendering with DR nodes.
I am rendering only with my Workstation
please let this be clear.
When i started this thread i already spend 4 hours trying to solve the problem. The basic's are to check textures paths, render without DR, strip the scene, etc. The DR is checked probably because i did more testing after i saved the file.
Very few people got the massfx problem which makes it hard to get attention and to reproduce the problem. But i have a very strong feeling this is causing the errors. I can probably reproduce those errors with more models from different packages. All the models that fail scattering are models i got the MassFx warning with.
You can see the attachments (still errors; but less noticeable)