I downloaded the trial to see if I want to add Arnold to my workflow. I can access everything fine (textures, lighting, etc) but if I click on the IPR window from the menu, the C4D crashes not matter what scene I use. I can render to the PV with the same scenese just fine.
I saw in another topic to turn off the fast IPR but that doesn't seem to help, and I couldn't find any other topics with the same issue.
Another thing to note, I don't see a watermark on the PV renders.
Here's a link to download the test scene