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.