Whenever you change a custom post type, you must flush the rewrite rules. This plugin does in in a single click. Additionally it enables you to check your rewrite rules against your URLs to make sure everything is working as it should. This is one of my essential plugins.
Love the plugin but noticed today, whilst debugging a new plugin I'm writting, that the plugin still uses the depreciated functions: screen_icon() and get_screen_icon().
Both have gone depreciated since 3.8.0 so I reckon a minor update to avoid these errors from popping up in the debug mode is worth the effort 🙂
The fix - with backwards compatibility (do we need that?) - would be to change:
<?php screen_icon( 'tools' ); ?>
<?php if ( function_exists('screen_icon') ) screen_icon( 'tools' ); ?>
(!) Notice: screen_icon is deprecated since version 3.8.0 with no alternative available.
(!) Notice: get_screen_icon is deprecated since version 3.8.0 with no alternative available.