Advanced Permissions: Page Type Defaults Buttons missing

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I ma having an issue with page type defaults. I had advanced permissions turned on, and have since upgraded to 5.6.0.2. Currently there is no way to edit page type defaults. The "buttons" are not available within the panel. See the attached image. I have looked through all the threads regarding this and have not come up with a solution. I am logged in as the super user, and have sub-page permissions set to inherit the permission of the home page.

If this is a permissions problem, then clearly I have to either go in and know how to specifically set permissions to get access to the page type defaults (which there should be documentation for) or there is a bug or upgrading problem that I am experiencing.

Any guidance regarding this is appreciated.

Chris

shondy