This is probably a bug in disParity: The folder-name "Michael Clayton " ended in a white-space (probably a SPACE). My guess is that you trim the folder-path somewhere in your code before you re-use it. When I removed the trailing white-space everything worked fine.
Also I have an (IMHO important) feature request: add a switch allowing disparity to continue even if it encounters errors (issue a WARN entry in the log-file). On large disks with a lot of data you're almost bound to encounter a file/folder that can't be read (locked, insufficient privileges etc). For a tool like disparity which for the time being is "best-effort" parity backup this is reasonable behaviour.
Other than that - great effort - disParity is exactly what's needed for an "amateurs" media library. I sleep a lot better now.