Index: trunk/admin/install.php
===================================================================
diff -u -r433 -r449
--- trunk/admin/install.php	(.../install.php)	(revision 433)
+++ trunk/admin/install.php	(.../install.php)	(revision 449)
@@ -68,6 +68,8 @@
   $pathtoroot = $pathtoroot.$pathchar;
 }
 
+ini_set('include_path', '.');
+
 if( file_exists($pathtoroot.'debug.php') && !defined('DEBUG_MODE') ) include_once($pathtoroot.'debug.php');
 
 $is_install = TRUE;