We have upgraded from Confluence 3.2.1 to Confluence 4.3.3 as per the suggestion of one of the support representatives. We have pages not loading and giving a System Error with error messages:
Error rendering template for decorator root
ERROR Mon Dec 17 07:00:44 PST 2012 com.opensymphony.webwork.dispatcher.VelocityResult Unable to render Velocity Template, '/pages/viewpage.vm