emailprocessing stops in a controlled way

rowers/mailprocessing.py

@@ -115,6 +115,8 @@ def make_new_workout_from_email(rower, datafile, name, cntr=0):
     if fileformat != 'csv':
         filename_mediadir, summary, oarlength, inboard = dataprep.handle_nonpainsled(
             'media/' + datafilename, fileformat, summary)
+        if not filename_mediadir:
+            return 0
     else:
         filename_mediadir = 'media/' + datafilename
         inboard = 0.88