best bet is to look at the selection list in text mode. on the "job setup" tab, find your selection list in the bottom window and double click (you might have to confirm something about modifying a selection with active jobs, whatever).
on the top right, there is a view radio box, change it to text. it should look something like:
\\servername\someshare\*.* /subdir
\\servername\someshare\recycler\*.* /exclude /subdir
etc...
remove any errant or extraneous entry and run the backup again.
