An issue with register_sidebar and the admin interface
Looks like the problem is with the id‘s. Try putting some unique names. For example, this doesn’t works in TwentyEleven, as it registers a sidebar with the same ID: ‘name’ => __(‘Main Sidebar’), ‘id’ => ‘sidebar-1’, From the Codex: id – Sidebar id – Must be all in lowercase, with no spaces (default is a … Read more