In programs like Cinema4D and Houdini - when users often work with plugins for particle effects - some additional baking may be needed to use RNDR. This tutorial created by artist Andrey Lebrov, walks you through the process of working with particles and attributes in Cinema4D for use on the RNDR network.
Baking Tutorial by Andrey Lebrov
For more information about exporting ORBX Scenes from Cinema4D, please see the guide below:
Exporting ORBX from C4D guide
You can also find documentation for exporting ORBX Scenes from Cinema4D in the 'Octane Cloud Rendering' section of the OctaneRender for Cinema4D manual