No good way to flush rules on registering post types
|Reported by:||WraithKenny||Owned by:|
Plugins that register post types can't flush_rewrite_rules() on activation.
flush_rewrite_rules is too early (for post types registered at init) at do_action( 'activate_' . $plugin, $network_wide ); and adding a delayed action on init fails because shortly after activate_plugin() there's a wp_redirect() at http://core.trac.wordpress.org/browser/trunk/wp-admin/plugins.php#L61 (which sets a new code execution) before the init hook runs.
What's left is manually visiting options-permalinks.php, setting an option and checking to do the flush, or flushing every page load, as is being recommended on many blogs.