diff -r 6aa1fae4c28a -r 15a3cbfc6568 hgext/convert/common.py
--- a/hgext/convert/common.py	Wed Jul 04 13:38:49 2007 -0700
+++ b/hgext/convert/common.py	Thu Jul 05 12:00:04 2007 -0700
@@ -17,7 +17,7 @@
     def __init__(self, ui, path, rev=None):
         """Initialize conversion source (or raise NoRepo("message")
         exception if path is not a valid repository)"""
-        raise NotImplementedError()
+        pass
 
     def getheads(self):
         """Return a list of this repository's heads"""