Yes all old files and only the R20 build is left in folder. Followed the instructions.
So another sight, you forgot another install in other plugin search path. It makes conflicts. Or installing to unexpected location.

I only have one install of cinema, I have checked both folders there are no ...

Hello,

I have been having an issue with launching Octane I am currently running the latest version of Cinema 4D R20 and the latest studio drivers.

I can get cinema to open OctaneStudio-for-C4D-2019_1_5-R3-win
but if I try to go any version that is newer of 2019 or 2020 my cinema 4d gets stuck ...

Hello,

I have been having an issue with launching Octane I am currently running the latest version of Cinema 4D R20 and the latest studio drivers.

I can get cinema to open OctaneStudio-for-C4D-2019_1_5-R3-win
but if I try to go any version that is newer of 2019 or 2020 my cinema 4d gets stuck ...