I have a site (http://www.webknowlogic.com), it has been running fine for over a year now I got similar problem as mentioned here.
I get same error (given below) on every page even on login page- only able to see the header part.....
Module Load Warning
One or more of the modules on this page did not load. This may be temporary. Please refresh the page (click F5 in most browsers). If the problem persists, please let the Site Administrator know.
There are three portals on this install, others are working fine except this one.
Any thoughts on what would have happened?