Error When Activating Mailchimp for WP Plugin

I succesfully downloaded the Pro Version of Mailchimp for WordPress. When I try to activate it, it gives an error as follows:

Plugin could not be activated because it triggered a fatal error.

Warning: require_once(/home/hugoterw/public_html/wp-content/plugins/mailchimp-for-wp-pro.php_/includes/functions/install.php): failed to open stream: No such file or directory in /home/hugoterw/public_html/wp-content/plugins/mailchimp-for-wp-pro.php_/mailchimp-for-wp-pro.php on line 65

Fatal error: require_once(): Failed opening required ‘/home/hugoterw/public_html/wp-content/plugins/mailchimp-for-wp-pro.php_/includes/functions/install.php’ (include_path=’.:/usr/local/php55/pear’) in /home/hugoterw/public_html/wp-content/plugins/mailchimp-for-wp-pro.php_/mailchimp-for-wp-pro.php on line 65

How can I solve this problem?