May contain traces of nut
No. All that matters is that there is a folder existing, or nothing stopping a folder being created. This "problem" has occurred because (somehow) a file is present with the exact name that should be created as a folder (thus preventing the creation of the folder and therefore an invalid path when the recording files attempt to be created).is it confusing for the machine to have both channels in the same folder?
It's the "somehow" that we need to focus on, to determine when this problem might occur.