I've set up a custom post type, let's say "widget" posts, which seems to work well. I can assign widget posts to categories in the admin panel. When the widget posts are displayed their correct category appears as part of the widget post display. However, if I click on a widget post's category link I'm taken to the category page where I'm told there are no posts for that category.
It looks like the widget posts are properly assigned to their categories, but the category pages appear to be filtering out the widget posts (i.e., the category pages will only display regular posts, not custom post types).
Does anyone know what I'm doing wrong?