Index: branches/unlabeled/unlabeled-1.155.2/core/kernel/application.php
===================================================================
diff -u -r5795 -r5887
--- branches/unlabeled/unlabeled-1.155.2/core/kernel/application.php	(.../application.php)	(revision 5795)
+++ branches/unlabeled/unlabeled-1.155.2/core/kernel/application.php	(.../application.php)	(revision 5887)
@@ -728,7 +728,7 @@
 	 */
 	function UseOutputCompression()
 	{
-		if (constOn('IS_INSTALL')) return false;
+		if (constOn('IS_INSTALL') || constOn('DBG_ZEND_PRESENT')) return false;
 		return $this->ConfigValue('UseOutputCompression') && function_exists('gzencode') && strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip');
 	}
 
@@ -1097,12 +1097,12 @@
 	function getPassThroughVariables(&$params)
 	{
 		static $cached_pass_through = null;
-		
+
 		if (isset($params['no_pass_through']) && $params['no_pass_through']) {
 			unset($params['no_pass_through']);
 			return Array();
 		}
-		
+
 		// because pass through is not changed during script run, then we can cache it
 		if (is_null($cached_pass_through)) {