I am constructing a WordPress theme, on a site where I need several post types and taxonomies. For the first time, I have used plugins to do so, 'simple custom taxonomies' and 'simple custom post types', to keep the data intact if we should choose to change theme someday.
My problem: Custom post types keep disappearing in admin UI, but in a very weird way. The post types show up as they normally would, if I had coded them in functions.php, but as soon as I turn on a plugin that wants to be in the menu, it takes over one of the post types place (See screenshot: http://cl.ly/KfkQ ). I have tried several plugins, and different post types, the result is the same.
As you can see on the dropdown it actually exists, but the "forms" has taken over the place of "frontpage elements". It's like there is a hard-limit on how much stuff is allowed up there.
I am an experienced themer, so believe my when I say that I have tried everything I can think of. Also, I have googled the **** out of the problem.
If any of you could help, I would be forever thankful!