diff -r 020a896a5292 -r e62a456b8dc5 mercurial/dispatch.py
--- a/mercurial/dispatch.py	Mon Jan 12 13:35:35 2009 -0600
+++ b/mercurial/dispatch.py	Mon Jan 12 13:51:43 2009 -0600
@@ -371,7 +371,7 @@
     def checkargs():
         try:
             return cmdfunc()
-        except util.SignatureError:
+        except error.SignatureError:
             raise error.ParseError(cmd, _("invalid arguments"))
 
     if options['profile']: