small bug fixed

rowers/views/planviews.py

@@ -81,7 +81,10 @@ def plannedsession_comment_view(request,id=0,userid=0):
                 rowers = {r.user for r in ps.rower.all()}
             commenters = set(list(commenters)+list(rowers))
             for u in commenters:
-                a_messages.info(u,message)
+                try:
+                    a_messages.info(u,message)
+                except ValueError:
+                    pass
                 if u != request.user and u != r.user:
                     ocr = Rower.objects.get(user=u)
                     res = myqueue(queuelow,