My C4DtoA shaders are not previewing even with IPR not running.

[Jacqueline_Dessel]

They just appear black on a black background, with tiny specular highlights on the Standard Surface shader. The rest are just flat black... nothing at all. They do appear fine in the IPR window when I do turn that on.

[Jacqueline_Dessel]

Someone else installed C4D for me (I'm on a Mac BTW) and they installed it in my own user directory instead of the main Applications folder. C4DtoA is installed in the Preferences/Plugins folder for C4D... if that helps any.

[peter.horvath6V6K3]

Make sure one of the Arnold preview scenes are selected as the material preview. If they are not listed in the context menu, then the installation must be wrong. These scenes are located in the library/materialpreview folder.