diff -r 75aaae8ad660 -r 54d7657d7d1e mercurial/extensions.py
--- a/mercurial/extensions.py	Sat May 03 03:29:30 2014 +0200
+++ b/mercurial/extensions.py	Mon May 05 16:54:15 2014 +0200
@@ -281,7 +281,7 @@
         return dict((name, gettext(desc))
                     for name, desc in __index__.docs.iteritems()
                     if name not in _order)
-    except ImportError:
+    except (ImportError, AttributeError):
         pass
 
     paths = _disabledpaths()
@@ -304,7 +304,7 @@
             return
         else:
             return gettext(__index__.docs.get(name))
-    except ImportError:
+    except (ImportError, AttributeError):
         pass
 
     paths = _disabledpaths()