Why do I get a UI Framework Error accessing index.htm?

The following error occurs when I access http://localhost:8080/openmrs/index.htm

You would get this message if you have the latest version of the appframework module, but you don’t have the latest version of referenceapplication and appui (or something like that).

Could that be the problem?

@darius works like a charm, updated to the latest versions of appui 1.5.1 and app framework 2.8