apparently after the last update, I just noticed a bug with the iray plugin. I have updated both CC4 and Iray plugin.
When you create an iray preview render and click on the save icon, the next window shows "BUG", there is a predefined save in the wrong *.iMtPlus format and this format cannot be changed, it is the only one offered. Correct, and to drive it right there was the possibility to choose PNG, JPG, ... image formats. Due to this error it is not possible to save the image. I need this output very often and I ask for a quick fix.
Here is a screenshot showing this problem. Alternatively, I am available to send anything else if you are unable to reproduce the problem.
Thank you very much and have a nice day Martin Reznicek RM3D