BuddyPress Group Search Not Working

I have a BuddyPress installation running with Membership.

BuddyPress is 1.6.2 because when I upgraded I had problems with pages not being able to be accessed so I removed 1.6.4 and reinstalled 1.6.2.

Membership is the latest Beta version.

When I search for posts under ‘Groups’ the titles show, but when I try to link to them I get this message:

Sorry, we can’t find the content you’re looking for at this URL. Please try selecting a menu item from above or to the side of this message to get where you’d like to go.

Please help!