outputResultsJSON of Job does not print if there is no schedule

dream/simulation/Job.py

@@ -62,7 +62,8 @@ class Job(Entity):                                  # inherits from the Entity c
             json['id'] = str(self.id)
             json['results'] = {}
             #json['extraPropertyDict'] = self.extraPropertyDict
-            
+            # if there is schedule
+            if self.schedule:
                 #if the Job has reached an exit, input completion time in the results
                 if self.schedule[-1][0].type=='Exit':
                     json['results']['completionTime']=self.schedule[-1][1]