I created a class called 'StringUtility' in a package called 'Utility' and encountered this stack trace when deploying: | 16:57:39,660 INFO [Initialization] initializing Seam | 16:57:39,704 INFO [Scanner] scanning: .../jboss-4.0.5.GA/server/default/deploy/app.ear/app.jar | 16:57:40,064 INFO [Scanner] scanning: .../jboss-4.0.5.GA/server/default/tmp/deploy/tmp61301jboss-seam.jar | 16:57:55,677 INFO [Component] Component: org.jboss.seam.core.init, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.Init | 16:57:59,309 ERROR [[/app]] Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener | java.lang.NoClassDefFoundError: org/jboss/seam/util/Conversions$StringConverter | at org.jboss.seam.util.Conversions$1.<init>(Conversions.java:18) | at org.jboss.seam.util.Conversions.<clinit>(Conversions.java:17) | at org.jboss.seam.Component$ConstantInitialValue.<init>(Component.java:1971) | at org.jboss.seam.Component.getInitialValue(Component.java:400) | at org.jboss.seam.Component.initInitializers(Component.java:378) | at org.jboss.seam.Component.<init>(Component.java:263) | at org.jboss.seam.Component.<init>(Component.java:204) | at org.jboss.seam.init.Initialization.addComponent(Initialization.java:742) | at org.jboss.seam.init.Initialization.addComponents(Initialization.java:625) | at org.jboss.seam.init.Initialization.init(Initialization.java:429) | at org.jboss.seam.servlet.SeamListener.contextInitialized(SeamListener.java:33) | at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3763) | at org.apache.catalina.core.StandardContext.start(StandardContext.java:4211) | ...deleted... | Simply renaming the class to 'StringUtil' allowed the application to deploy without error. Please let me know if you need a tighter test case in JIRA or more of the stack trace. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3999738#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...