BuddyPress.org

“Too bad that old theme of BuddyPress isn’t available anymore. “

Sure it is. All old code is held in trac. you;d have to update it for the latest verison.

like I said in another email, you’re setting a buddypress theme on a subsite – where buddypress is not used. THAT is the issue. you have to strip the BP parts out of a copy fo the theme.