Index: trunk/core/kernel/startup.php
===================================================================
diff -u -r2685 -r2750
--- trunk/core/kernel/startup.php	(.../startup.php)	(revision 2685)
+++ trunk/core/kernel/startup.php	(.../startup.php)	(revision 2750)
@@ -9,8 +9,13 @@
 define('INPORTAL_ENV', 1);
 
 # New path detection method
-$ps = preg_replace("/\/admin$/", '', str_replace('\\', '/', dirname($_SERVER['PHP_SELF'])));
 
+if (!defined('REL_PATH')) {
+	define('REL_PATH', '/admin');
+}
+
+$ps = preg_replace("/".preg_quote(rtrim(REL_PATH, '/'), '/')."$/", '', str_replace('\\', '/', dirname($_SERVER['PHP_SELF'])));
+
 define('BASE_PATH', $ps);
 
 # /New method