change to use load_class() from core
diff --git a/system/core/URI.php b/system/core/URI.php
index 77b8149..cffffc2 100644
--- a/system/core/URI.php
+++ b/system/core/URI.php
@@ -44,7 +44,7 @@
 	 */
 	function CI_URI()
 	{
-		$this->config =& load_class('Config');
+		$this->config =& load_class('Config', 'core');
 		log_message('debug', "URI Class Initialized");
 	}