Invalid Customizations
If you import customizations and then find yourself unable to access the settings page, you might need a little tip to import your back up.
The scenario is that you've imported customizations and somehow removed the ability to navigate to the settings area to import customizations. While frustrating, it's not without hope.
You can navigate directly to the page and then import your back up ( cuz you did a back up before you made changes, right ? ).
https://OrgName.crm.dynamics.com/tools/systemcustomization/
ImportCustomizations/importCustomizations.aspx
Cheers
-Jon
