BuddyPress.org

Hi, i already have wpmu installed on my root domain. but the thing is that I want to have a community site using buddypress on a wpmu subdirecotry. Ok an example is:

my wpmu root is – http://www.domain.com and I want to have a buddypress community like this: http://www.domain.com/community I have tried going to my wpmu as admin, and create a new blog named community under admin tab, then when I go back to http://www.domain.com/community to select the buddypress theme it works, but when I add a new member o want to search for members of the community, it doesnt showed anything but when I ran buddypress community on the root directory http://www.domain.com the members appear. I already have enable the options to let people to subscribe to other blogs and add user via user tab.