I switched over to using Seam trunk to prepare some demos for my talks and I quickly discovered that hot deployment is not working. The problem is that the hot deployment routine in Initialization is trying to access a non-initialized private field, hotDeploymentStrategy. In Seam 2.0, the strategy was setup both at initial deployment and hot deployment. In Seam trunk, the setup does not occur during hot deployment. I fixed it by changing (around line 664): //TODO open the ability to reuse the classloader by looking at the components class classloaders // Rescan hotDeploymentStrategy.scan(); // And install installHotDeployableComponents(); Pages.instance().setHotDotPageDotXmlFileNames(DotPageDotXmlDeploymentHandler.hotInstance().getFiles()); to: createHotDeployment(Thread.currentThread().getContextClassLoader()); //Pages.instance().setHotDotPageDotXmlFileNames(DotPageDotXmlDeploymentHandler.hotInstance().getFiles()); I had to comment out the scanning for new .page.xml files because somewhere it was throwing a null pointer that I didn't track down. -Dan -- Dan Allen Software consultant | Author of Seam in Action http://mojavelinux.com http://mojavelinux.com/seaminaction NOTE: While I make a strong effort to keep up with my email on a daily basis, life and work come first and, at times, keep me away from my mail for a while. If you contact me, then don't hear back for more than a week, it is very likely that I am excessively backlogged or the message was caught in the spam filters. Please don't hesitate to resend a message if you feel that it did not reach my attention.