[Plugin: BuddyPress Template Pack] getting a blank homepage

I’m trying to use the twentyten theme with some modifications as a buddypress theme.

I added the tag “buddypress” to style.css and already have instaled the buddypress template pack plugin. I also move the activity, registration and members folders to twentyten theme.

But when I active the buddypress it crashes my theme and I get a blank home page.

What would I’m forgetting to change?