When I select the Page History option, I can see the versions listed on the left, but when I select an older version number from the version number drop-down-listbox, I don't see any of the "Added" and "Deleted" content in the main content area of the page like it should. Am I missing something ... a certain component or webpart or whatever it is. If the page title has changed, I can see that as a diff, but not any of the content changes. The page is a standard publishing page, so I don't think the content is in a webpart (as far as I know) like the message in the image says.
Best regards, Michael