I have a few websites that use domain mapping (ie. http://dallashypnosisprograms.com). Whenever I click on post or page "Preview," the button does not work unless I first save it as a draft. Even after doing that, however, the button then creates a new tab, but I am given an Error 404 page.
I have been able to isolate it insomuch as this does not happen on websites that do not use domain mapping.