BuddyPress.org

I’ve created a child theme based on ‘bp-default’ for my main site/blog. I have another blog that needs to be a child of my child theme – the layout being slightly different, and most importantly ‘set_post_thumbnail_size( 170, 235, true ); ‘ in the functions.php – along with any other differences I might think up in the future.

Is this possible? Currently if I set the template as ‘bp-default’ on this child-of-child I lose all the changes I’ve defined in the first child, and if I set it to be a child of my child theme it fails on ‘Call to undefined function bp_dtheme_page_on_front()’.

Any clues as to how I might tackle this?