AES Encryption is installed but not configured securely. Please go configure AES Encryption to use file storage to enable encryption for SalesForce credentials.

I have installed the module after reading the readme file. On sales force page I still get the above message. The AES.php file is inside the appropriate path aes/phpseclib/Crypt/AES.php.

I have installed phpseclib intead of mcrypt.

Is there any settings I am missing?