Wp-smush downing my network

Hi There,

I just subscribed to your service. I have installed a number of your plugins across various sites with success however when I tried to install WP SMUSH PRO across one network it has downed all the sites.

I get the following error message:

Fatal error: Cannot redeclare get_plugin_dir() (previously declared in /home/hakubahotel/public_html/wp-content/plugins/wp-smush-pro/wp-smush.php:128) in /home/hakubahotel/public_html/wp-content/plugins/wp-smushit/wp-smush.php on line 120

URL: http://hakubahotel.group/