1 | | iiuc, if the user updates to WP 4.4 **before** updating their plugins, and if they have an active plugin, or theme, or custom code that extends Walker_Category_Checklist, where it previously ''just worked'' to require template.php [like in this example], then they will get a fatal error when they try to load up the WP admin. |
| 1 | iiuc, if the user updates to WP 4.4 **before** updating their plugins, and if they have an active plugin, or theme, or custom code that extends Walker_Category_Checklist, where it previously ''just worked'' to require template.php [like in this example](http://wordpress.stackexchange.com/a/129295), then they will get a fatal error when they try to load up the WP admin. |