There was a bug in the scratch process where if you started on the Meets tab when the Scratch action was selected, there was not a list of swimmers presented for the user to scratch.  When starting on the Roster page and selecting a swimmer to scratch did work properly.  The bug has been fixed and v0.2.488 is now available for download and both paths, starting with a meet or starting with a swimmer, now work correctly.  The same bug would have affected Opt-In meets as well.