--- /usr/lib/python2.6/site-packages/nectar/downloaders/threaded.py     2014-08-21 13:30:10.000000000 -0400
+++ threaded.py 2015-06-05 09:39:09.376932673 -0400
@@ -102,6 +102,7 @@
 
         except:
             _LOG.exception('Unhandled Exception in Worker Thread [%s]' % threading.currentThread().ident)
+            self.cancel()
 
     def download(self, request_list):
         worker_threads = []