diff -r 2f6f6f7551ca -r 32102edaa81b web/wp-admin/js/custom-fields.dev.js
--- a/web/wp-admin/js/custom-fields.dev.js	Thu Sep 16 15:45:36 2010 +0000
+++ b/web/wp-admin/js/custom-fields.dev.js	Mon Nov 19 18:26:13 2012 +0100
@@ -2,7 +2,7 @@
 	var before, addBefore, addAfter, delBefore;
 
 	before = function() {
-		var nonce = $('#newmeta [name=_ajax_nonce]').val(), postId = $('#post_ID').val();
+		var nonce = $('#newmeta [name="_ajax_nonce"]').val(), postId = $('#post_ID').val();
 		if ( !nonce || !postId ) { return false; }
 		return [nonce,postId];
 	}