Index: main_processor.php
===================================================================
--- main_processor.php	(revision 15158)
+++ main_processor.php	(working copy)
@@ -508,24 +508,47 @@
 	// for tabs
 	function is_active($params)
 	{
-		$test_templ =  $this->SelectParam($params, 'templ,template,t');
-		if ( !getArrayValue($params,'allow_empty') )
-		{
-			$if_true=getArrayValue($params,'true') ? $params['true'] : 1;
-			$if_false=getArrayValue($params,'false') ? $params['false'] : 0;
+		$test_templ = $this->SelectParam($params, 'templ,template,t');
+
+		if ( !getArrayValue($params, 'allow_empty') ) {
+			$if_true = getArrayValue($params, 'true') ? $params['true'] : 1;
+			$if_false = getArrayValue($params, 'false') ? $params['false'] : 0;
 		}
-		else
-		{
-			$if_true=$params['true'];
-			$if_false=$params['false'];
+		else {
+			$if_true = $params['true'];
+			$if_false = $params['false'];
 		}
 
-		if ( preg_match("/^".str_replace('/', '\/', $test_templ)."/i", $this->Application->GetVar('t'))) {
-			return $if_true;
+		$physical_template = $this->_getPhysicalTemplate($this->Application->GetVar('t'));
+
+		return preg_match('/^' . str_replace('/', '\/', $test_templ) . '/i', $physical_template) ? $if_true : $if_false;
+	}
+
+	/**
+	 * Returns theme template filename and it's corresponding page_id based on given seo template
+	 *
+	 * Copy from kUrlManager::getPhysicalTemplate in 5.2.0 version
+	 *
+	 * @param string $seo_template
+	 * @return string
+	 * @access public
+	 */
+	public function _getPhysicalTemplate($seo_template)
+	{
+		$physical_template = array_search($seo_template, $this->Application->structureTemplateMapping);
+
+		if ( $physical_template === false ) {
+			return false;
 		}
-		else {
-			return $if_false;
+
+		if ( substr($physical_template, 0, 3) == 'id:' ) {
+			// virtual templates have same path
+			return $seo_template;
 		}
+
+		list ($physical_template,) = explode(':', $physical_template, 2); // template_path:theme_id => seo_template
+
+		return $physical_template;
 	}
 
 	function IsNotActive($params)