diff -r 00736cd2702a -r cce63ef1045b mercurial/extensions.py
--- a/mercurial/extensions.py	Sun Apr 26 16:50:44 2009 -0500
+++ b/mercurial/extensions.py	Sun Apr 26 16:50:44 2009 -0500
@@ -87,7 +87,7 @@
             else:
                 ui.warn(_("*** failed to import extension %s: %s\n")
                         % (name, inst))
-            if ui.print_exc():
+            if ui.traceback():
                 return 1
 
 def wrapcommand(table, command, wrapper):