BP set_404() Errors

Hello,

I am running WP 3.4 and BP 1.5.6. (Non multi-install).

If I request a member's page of a user which does not exist (http://domain.com/buddypress/members/xxx/), I get the following error:

Fatal error: Call to a member function set_404() on a non-object in /www/buddypress/wp-content/plugins/buddypress/bp-core/bp-core-functions.php on line 1470

I found a similar post here, but without a solution:
http://buddypress.org/community/groups/how-to-and-troubleshooting/forum/topic/multiple-bizarre-404-behaviors/

Can someone try and reproduce the error by attempting to access a non-existant user? (http://domain.com/buddypress/members/xxx/)

Thanks