fixes and tweet removal

rowers/tasks.py

@@ -3404,6 +3404,9 @@ def handle_nk_async_workout(alldata, userid, nktoken, nkid, delaysec, defaulttim
     workoutid, error = add_workout_from_data(userid, nkid, data, df)
 
     # dologging('nklog.log','NK Workout ID {id}'.format(id=workoutid))
+    if workoutid == 0:
+        return 0
+    
     workout = Workout.objects.get(id=workoutid)
     newnkid = workout.uploadedtonk
     sr = SyncRecord.objects.filter(nkid=newnkid)