&quot;gavin.king(a)jboss.com&quot; wrote : Ack, I missed adding one of the src folders to the dist. I'll fix and upload a new build. Thanks for the reply, Gavin. For the time being, a simple workaoround is to remove "jargen" from target "build" in file build.xml. <!--original target <target name="build" depends="jar,jarui,jardebug,jargen" --> <!-- changed target --> Then it is possible to build jboss-seam.jar, jboss-seam-debug.jar and jboss-seam-ui.jar without any build failure. But since I'm new to JBoss seam, I was wondering whether the build.xml file for seam1.1 is really intended as it was released. This is why I asked here. Clearly, for new users it can be confusing when they download the distribution and encounter a build failure. PS: Sorry for my bad English View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3987603#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...