I was hoping to use your plugin to create a full page slideshow on the background of my landing page. When I go to add a slide show, I can click "upload images" but when I click on "submit for review" I get to the error page "you're not allowed to edit this post." I am logged in as the administrator. This is a custom theme that I've been tinkering with on a local server. It has several custom post-types. Could that be why it's not working?