BuddyPress.org

@Theeasybutton: I’ve tried installing a testbuild, it worked. As soon as I started migrating the database data, the slugs did not work anymore.

I’ve only been replacing all wp_1_* data, changed the domain to test; no more, no less.

The problem must be with the data; since a fresh install works perfectly and after the data gets imported, I get the nasty 404 bug.