Updated system/core/Common.php to ucfirst the class name.

system/core/Common.php

@@ -143,7 +143,7 @@ function &load_class($class, $directory = 'libraries', $prefix = 'CI_')
 		}
 
 		$name = FALSE;
-
+		$class = ucfirst($class);
 		// Look for the class first in the local application/libraries folder
 		// then in the native system/libraries folder
 		foreach (array(APPPATH, BASEPATH) as $path)