diff -r 322d0feea350 -r 89ef5ed3c48b src/cm/media/js/client/c_scopes.js
--- a/src/cm/media/js/client/c_scopes.js	Mon Jul 15 15:25:58 2013 +0200
+++ b/src/cm/media/js/client/c_scopes.js	Tue Jul 16 14:29:46 2013 +0200
@@ -185,7 +185,7 @@
 // was replaced with :
 // afterStartElt = _yuiCloneNode(startElt) ;
 _yuiCloneNode = function (srcElt) {
-  var ret = CY.Node.getDOMNode(CY.get('#'+srcElt.id).cloneNode(true)) ;
+  var ret = CY.Node.getDOMNode(CY.one('#'+srcElt.id).cloneNode(true)) ;
   ret.id = CY.guid();
   return ret ;
 };