Steps to reproduce:
1.- Access with an administrator user with two sites with pages and contents created previously. One of them, includes contents with corrupted images the other one contains correct information.
2.- Click on "My Sites" and then the site with corrupted images.
3.- Click on "Admin/Content" related to the selected site .
4.- Click on "My Sites" and select another one with correct information.
The "Staging" and "Live" buttons doesn't appear in the upper bar in the home page for that site