Index: /CKEditor/trunk/_source/plugins/htmldataprocessor/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/htmldataprocessor/plugin.js	(revision 4789)
+++ /CKEditor/trunk/_source/plugins/htmldataprocessor/plugin.js	(revision 4790)
@@ -239,5 +239,5 @@
 		unprotectElementNamesRegex = /(<\/?)cke:((?:html|body|head|title)[^>]*>)/gi;
 
-	var protectSelfClosingRegex = /<cke:(param|embed)([\s\S]*?)\/?>/gi;
+	var protectSelfClosingRegex = /<cke:(param|embed)([^>]*?)\/?>(?!\s*<\/)/gi;
 
 	function protectAttributes( html )