Updated _parse_request_uri to reflect the fact that FCPATH no longer contains index.php as part of the path.
diff --git a/system/libraries/URI.php b/system/libraries/URI.php
index e74af31..73ddec8 100644
--- a/system/libraries/URI.php
+++ b/system/libraries/URI.php
@@ -146,7 +146,7 @@
 			return '';
 		}
 
-		$fc_path = FCPATH;
+		$fc_path = FCPATH.SELF;
 		if (strpos($request_uri, '?') !== FALSE)
 		{
 			$fc_path .= '?';