Index: main_processor.php
===================================================================
--- main_processor.php	(revision 15359)
+++ main_processor.php	(working copy)
@@ -85,10 +85,14 @@
 	 * @param Array $params
 	 * @return string
 	 * @access protected
+	 * @see kMainTagProcessor::TemplatesBase
 	 */
 	protected function Base_Ref($params)
 	{
-		return '<base href="' . $this->TemplatesBase($params) . '/" />';
+		// tag TemplatesBase adds trailing "/" but only on Front-End
+		$base_href = rtrim($this->TemplatesBase($params), '/');
+
+		return '<base href="' . $base_href . '/" />';
 	}
 
 	/**