I have been using RichFaces 3.3.2 successfully for a while now with Glassfish 2.1, JSF 1.2 and Facelets 1.1.15. Recently I decided to upgrade to Glassfish v3, JSF 2.0, RichFaces 3.3.3, and remain with Facelets 1.1.15. Everything in the new environment works great, except for a4j:mediaOutput tags. Instead of my dynamic images showing on the page, I see the browser's broken image icon, and in my Glassfish log I get the error below. Any help would be appreciated!