Buddypress Q-and-A page (Buddypress profile) yields "page not found" error


Multisite installation (on localhost, in the root directory).

I have Buddypress installed in the main site and Q&A plugin installed in a subsite.

Links to members’ “q-and-a” buddypress profile page (i.e. http//localhost/members/username/q-and-a) yields a Page not found (404) error.

I checked that bp_core_new_nav_item registers correctly in $bp.

Did I overlook something? Am I supposed to copy templates into my theme? Or?