Index: kernel/nparser/template_cache.php
===================================================================
--- kernel/nparser/template_cache.php	(revision 13986)
+++ kernel/nparser/template_cache.php	(working copy)
@@ -58,6 +58,11 @@
 	{
 		parent::kHelper();
 
+		if ( !defined('T_DOC_COMMENT') ) {
+			// method "TemplatesCache::_compress" uses such constant, but it's only available since PHP 5.0.0
+			define('T_DOC_COMMENT', 366);
+		}
+
 		$this->BasePath = FULL_PATH . THEMES_PATH;
 
 		$this->_compileToDatabase = defined('SAFE_MODE') && SAFE_MODE;