Re: Header links of sub blogs
BuddyPress pages will only run on the root blog, or the blog ID you give for BuddyPress to run on by adding this to wp-config.php:
define( \'BP_ROOT_BLOG\', 1 );
Where \’1\’ is the ID of the blog you want BuddyPress to run on.
This was introduced in a recent build – before BuddyPress would potentially override pages on any blog, which causes problems.