Fix USERFILESPATH regression

library/startup.php

@@ -73,7 +73,7 @@ function setupConstants() {
 	defineConstant('MODULEDIRECTORY', ROOT_PATH . 'application/modules');
 	defineConstant('LANG_DIR', ROOT_PATH . 'library/translation/');
 
-	defineConstant('USERFILESPATH', ROOT_PATH . 'userfiles');
+	defineConstant('USERFILESPATH', './userfiles');
 	defineConstant('USERFILESURL', BASE_URL . '/userfiles/');
 	defineConstant('PATH_TEMP',  ROOT_PATH . 'temp/');