[kriizz]

Hi,

just had the same Problem with “bbp_new_topic_handler”.
Maybe my solution will help:

/*
	After all Plugins are loaded, remove bbp_action hook.
        Remove it after all plugins are loaded, because hook'S maybe not available at the   moment you want to remove it. 
        After that, override the add_Action with a copy of the original function. Do all your changes in your own function

*/
function remove_bbp_new_topic_handler() {
	remove_action('bbp_post_request', 'bbp_new_topic_handler',10);
	add_action('bbp_post_request', 'my_bbp_new_topic_handler',10);
}
add_action( 'plugins_loaded', 'remove_bbp_new_topic_handler' );

function my_bbp_new_topic_handler( $action = '' ) {
  /* copy of bbp_new_topic_handler and your changes */
}