Yes, got that.

And yes: everything is installed and done like it's mentioned in the readme.txt.

PS: We tested it on several Windows 10 pc-systems with other cards and hardware components. Exactly the same error. Everythings else, like LiveViewer and stuff works.

Well it's not in "c4doctane/res", but in "c4doctane/res/description".
Sure these files are there, as we already tried some stuff mentioned here: https://render.otoy.com/forum/viewtopic.php?f=85&t=54672&p=282673&hilit=vprenderer#p282673
Also tried a clean reinstall; the files are there, but somehow ...

Hey there,

we recently updated to version 3.08.
Standalone works, Live Viewer works, even rendering without changing the settings works, BUT, once you click on the "octane renderer" tab in C4D's rendersection, it fails on finding the "vprenderer.res" data.
After that the octane render section is ...