I'm not sure which version this thread was initially speaking about, but I'm trying to do this using v0.5.9.32 with no sucess.
How is this function supposed to work? When it cycles through a directory is it also looking for stray files (as per the condition) then deleting them or is there some trigger that must occur before this cleanup occurs?
Edit: I just realised that potentially I could do the cleanup by creating a cleanup job instead. Might be more powerful too
Edit2:: After leaving it for several hours, it did finally clean up.