One or more configuration details didn't check out OK !

For months, I've had these errors on the homepage of my 2.0.4 site:

One or more configuration details didn't check out OK:
Configuration warning: Your site's Unauthorized page is not published or does not exist.
What does this mean?
This means that your Unauthorized page is not accessible to normal web surfers or does not exist. This can lead to a recursive looping condition and many errors in your site logs. Make sure there are no webuser groups assigned to the page.

Configuration warning: Your site's Error page is not available.
What does this mean?
This means that your Error page is not accessible to normal web surfers or does not exist. This can lead to a recursive looping condition and many errors in your site logs. Make sure there are no webuser groups assigned to the page.


Today I tried copying the whole site and db, and doing an upgrade to 2.1, and those pesky errors are STILL THERE!

How do I fix this? I need a working 404 page!

Thanks!

(Yes, those keys do exist in the site settings...)

Have you checked your configuration for the error page. (System -> System Settings -> *search for error) Should look like the attached, make sure your value is an actual resource id of your site tree. There is also the "unauthorized_page" setting as well.

Your note says they are in settings, but are they actual pages? Then also try to clear you site cache for good measure.

Cheers

Also, make sure the error page and unauthorized page are published.

By default, they are set to the home page (resource 1), so if you deleted or unpublished that page it would explain the problem.