To better show what the problem is, here's a change that would fix the problem (albeit in an ugly way):

--- upload.py   2010-07-07 20:16:33.000000000 -0400
+++ /home/pje/upload.new        2010-11-09 14:30:21.000000000 -0500
@@ -167,6 +167,9 @@
 
         request = Request(self.repository, data=body,
                           headers=headers)
+
+        result = None
+
         # send the data
         try:
             result = urlopen(request)
@@ -186,4 +189,4 @@
             self.announce('Upload failed (%s): %s' % (status, reason),
                           log.ERROR)
         if self.show_response:
-            self.announce('-'*75, result.read(), '-'*75)
+            self.announce('-'*75, result.read() if result is not None else 'ERROR', '-'*75)