[Solved]Community Auth, MY_Input Error

Hello,
My Versions:
CI: 3.1.4
PHP: 7

I Installed CI without Problems. Install Community Auth (https://community-auth.com/) with Error:

An uncaught Exception was encountered

Type: TypeError

Message: Argument 1 passed to CI_Input::__construct() must be an instance of CI_Security, none given, called in C:\MAMP\htdocs\test\application\core\MY_Input.php on line 29

Filename: C:\MAMP\htdocs\test\system\core\Input.php

Line Number: 106

Backtrace:

File: C:\MAMP\htdocs\test\application\core\MY_Input.php
Line: 29
Function: __construct

File: C:\MAMP\htdocs\test\index.php
Line: 308
Function: require_once

Have any Idea for this Problem?
Sry, for my English  

Solved: Reinstall CI
Post can Closed