I upgraded to WordPress 3.0 awhile back on the site where the below issue was noticed and in fact am running WordPress 3.1 on the site now. Today when attempting to block a new page from showing in the navigation bar via the Mandigo theme Theme Options screen I received an error complaining about permissions. I had to check to see if I had modified anything recently that could have effected these permissions but was unable to come up with anything. Turns out in the changelog that I keep the item that made the most sense was the upgrades from WordPress 2.X to WordPress 3.X. Below I describe the error in more detail followed by how to resolve the issue.