Class 'CustomPress_Core' not found

I tried to install the directory plugin, and I got this error:

Fatal error: Class 'CustomPress_Core' not found in /wordpress/wp-content/plugins/directory/core/custompress/core/content-types.php on line 18

I don't have the custompress installed.

I have installed the BuddyPress, membership plugin and MarketPress.

My system is wp+multisite. The plugin was uploaded correctly.

I hope you can help me.

Thank you,

Best Regards,

Hugo