I just created a new category page for my blog (http://afdviersen.wordpress.com/), just as I have done couple of times before. There are currently 3 posts that belong to that new category named "H. Rubbert auf Abgeordnetenwatch". I changed my menu accordingly (meaning I added the page by clicking "categories" and then dragging the page in question into the menu and saving it. When I go to the dashboard and click on "posts" and "categories", I can "call it up" - and everything displays just fine: Archives of the category "H. Rubbert auf Abgeodnetenwatch".
However - the category page does not appear in the menu! I've tried numerous times now, and though it has always worked while I was still using the "truly minimal" theme, it doesn't now, that I changed everything to "twenty-twelve". All my old category-pages are properly displayed, though. Is it possible that this has do do with the theme?
I'd be very grateful for advice on this matter, since I couldn't find this toppic anywhere!
The blog I need help with is afdviersen.wordpress.com.