Yes, I did it some days ago. The scenario seems to be this:
couchpotato user belongs to
Folders with movies are created
755 (group can't write)
couchpotato user, as
OSMC member, can't write new movie folders.
I think this issue should be solved if new folders can be created automatically 775 instead 755, but I don't know how to do it.
I did install manually. Do you recommend me to reinstall it from script?