Found the solution. At some point the TC_featured_pages object has been renamed. This has broken the code, at least in my setup.
Here are the changes
function move_my_fp() {
if (is_front_page()) {
//we unhook the featured pages
remove_action ( '__before_main_container', array( CZR_featured_pages::$instance , 'czr_fn_fp_block_display'), 10 );
//we re-hook the block. Check out the priority here : set to 0 to be the first in the list of different actions hooked to this hook
add_action ( '__after_main_container', array( CZR_featured_pages::$instance , 'czr_fn_fp_block_display'), 0 );
}
}
