BuddyPress - WP Multisite - Pending Users Permissions Error

Hello I am running into an issue on my WP Multisite where when I try to click the "pending users" link it gives me the following error "You do not have sufficient permissions to access this page."

https://www.dropbox.com/s/c19oniky2254acv/Screenshot%202015-04-22%2012.31.18.png?dl=0

This is a subdomain installation of BuddyPress that's not activated on the parent site. I tried adding this: define ( 'BP_ROOT_BLOG', 2 ); to the wp-config.php file but this didn't help.

I currently can not network activate BuddyPress as it causes all of the groups on the network to disappear – no idea why.

Is there any way to resolve this issue w/o having to network-activate BuddyPress? Seems like an overkill solution either way.

Thanks! - Daniel