BuddyPress.org

A couple of questions:

1. What locahost environment (OS and server) are you running your install on?

2. Did you install the bpmember theme folder in /wp-content/bp-themes/?

3. Did you choose the BuddyPress default member theme, bpmember, in WPMU’s backed? You do this by logging into WPMU as site admin, then going to “BuddyPress > General Settings > Select theme to use for BuddyPress generated pages”.

4. Do you have a .htaccess file in the directory in which you’ve installed WPMU?