BP Group Blog Plugin errors

Taking a chance to see if anyone here is familiar with the following error:

Warning: include(): Filename cannot be empty in /home/.../public_html/wp-content/plugins/bp-groupblog/groupblog/inc/activity.php on line 18

Warning: include(): Failed opening '' for inclusion (include_path='.:disappointed:usr/lib/php:disappointed:usr/local/lib/php') in /home/.../public_html/wp-content/plugins/bp-groupblog/groupblog/inc/activity.php on line 18

I get this after activating on a new multisite with BP activated.

Any responses appreciated