BuddyPress.org

It seems to me, you are unable to catch the blog slug.

make sure , you functions.php has something like this,You can see this code in bp-sn-parent

/* Make sure the blog index page shows under /[HOME_BLOG_SLUG] if enabled */

function bp_dtheme_show_home_blog() {

global $bp, $query_string, $paged;



if ( $bp->current_component == BP_HOME_BLOG_SLUG && ( !$bp->current_action || 'page' == $bp->current_action ) ) {

unset( $query_string );



if ( ( 'page' == $bp->current_action && $bp->action_variables[0] ) && false === strpos( $query_string, 'paged' ) ) {

$query_string .= '&paged=' . $bp->action_variables[0];

$paged = $bp->action_variables[0];

}



query_posts($query_string);



bp_core_load_template( 'index', true );

}

}

add_action( 'wp', 'bp_dtheme_show_home_blog', 2 );