Site crashes immediately on activation

As soon as the plugin is activated via the WPMU Installer or standard install its all 500 all the time..

Looks like the activation routine didn't install any tables. The error logs are showing

[Sun Mar 20 03:10:32.057670 2016] [:error] [pid 4991] [client] WordPress database error Table 'wp_mp_product_attributes' doesn't exist for query SELECT * FROM wp_mp_product_attributes made by require_once('wp-admin/admin.php'), require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), do_action('init'), Marketpress->register_custom_types, MP_Product_Attributes->register, MP_Product_Attributes->get, referer: