I am also getting exceptions when I try to invoke action methods. I actually reproduced the docs example of print.println('Hello World!') However, when I go invoke an action method with parameters, it craps out. Any idea of what could cause this, because the documentation says I can do the following syntax: | <s:link value="Cancel" action="#{hotelBooking.cancel()}"/> | I changed the getStatus() to status and it works, I was just using that as an example previously, but here is what I really want to get working: Purchase.java | ... | @Transient | public Double totalUnitCost() { | double total = 0; | for(Item item : items) { | total += item.getUnitCost(); | } | return total; | } | ... | viewPurchases.xhtml | ... | <!-- Total Unit Cost--> | <h:column> | <f:facet name="header"> | <h:outputText value="Total Unit Cost" /> | </f:facet> | <h:outputText value="#{purchase.totalUnitCost()}" /> | </h:column> | ... | | 12:13:31,140 ERROR [STDERR] Dec 1, 2006 12:13:31 PM com.sun.facelets.FaceletViewHandler handleRenderException | SEVERE: Error Rendering View[/viewPurchases.xhtml] | com.sun.facelets.tag.TagAttributeException: /viewPurchases.xhtml @159,58 value="#{purchase.totalUnitCost()}" Error Parsing: #{purchase.totalUnitCost()} | at com.sun.facelets.tag.TagAttribute.getValueExpression(TagAttribute.java:259) | at com.sun.facelets.tag.jsf.ValueHolderRule$DynamicValueBindingMetadata.applyMetadata(ValueHolderRule.java:115) | at com.sun.facelets.tag.MetadataImpl.applyMetadata(MetadataImpl.java:36) | at com.sun.facelets.tag.MetaTagHandler.setAttributes(MetaTagHandler.java:62) | at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:140) | at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47) | at com.sun.facelets.tag.jsf.ComponentHandler.applyNextHandler(ComponentHandler.java:295) | at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:165) | at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47) | at com.sun.facelets.tag.jsf.ComponentHandler.applyNextHandler(ComponentHandler.java:295) | at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:165) | at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47) | at com.sun.facelets.tag.jsf.ComponentHandler.applyNextHandler(ComponentHandler.java:295) | at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:165) | at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47) | at com.sun.facelets.tag.ui.DefineHandler.apply(DefineHandler.java:58) | at com.sun.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:128) | at com.sun.facelets.impl.DefaultFaceletContext$TemplateManager.apply(DefaultFaceletContext.java:306) | at com.sun.facelets.impl.DefaultFaceletContext.includeDefinition(DefaultFaceletContext.java:279) | at com.sun.facelets.tag.ui.InsertHandler.apply(InsertHandler.java:68) | at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47) | at com.sun.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:49) | at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47) | at com.sun.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:25) | at com.sun.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:248) | at com.sun.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:294) | at com.sun.facelets.impl.DefaultFacelet.include(DefaultFacelet.java:273) | at com.sun.facelets.impl.DefaultFaceletContext.includeFacelet(DefaultFaceletContext.java:143) | at com.sun.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:113) | at com.sun.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:49) | at com.sun.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:25) | at com.sun.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:95) | at com.sun.facelets.FaceletViewHandler.buildView(FaceletViewHandler.java:510) | at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:553) | at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384) | at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) | at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175) | at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) | at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) | at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) | at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) | at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112) | at java.lang.Thread.run(Thread.java:619) | Caused by: javax.el.ELException: Error Parsing: #{purchase.totalUnitCost()} | at com.sun.el.lang.ExpressionBuilder.createNodeInternal(ExpressionBuilder.java:140) | at com.sun.el.lang.ExpressionBuilder.build(ExpressionBuilder.java:157) | at com.sun.el.lang.ExpressionBuilder.createValueExpression(ExpressionBuilder.java:201) | at com.sun.el.ExpressionFactoryImpl.createValueExpression(ExpressionFactoryImpl.java:74) | at com.sun.facelets.tag.TagAttribute.getValueExpression(TagAttribute.java:256) | ... 60 more | Caused by: com.sun.el.parser.ParseException: Encountered "(" at line 1, column 25. | Was expecting one of: | "}" ... | "." ... | "[" ... | ">" ... | "gt" ... | "<" ... | "lt" ... | ">=" ... | "ge" ... | "<=" ... | "le" ... | "==" ... | "eq" ... | "!=" ... | "ne" ... | "&&" ... | "and" ... | "||" ... | "or" ... | "*" ... | "+" ... | "-" ... | "?" ... | "/" ... | "div" ... | "%" ... | "mod" ... | | at com.sun.el.parser.ELParser.generateParseException(ELParser.java:1651) | at com.sun.el.parser.ELParser.jj_consume_token(ELParser.java:1531) | at com.sun.el.parser.ELParser.DeferredExpression(ELParser.java:134) | at com.sun.el.parser.ELParser.CompositeExpression(ELParser.java:61) | at com.sun.el.lang.ExpressionBuilder.createNodeInternal(ExpressionBuilder.java:103) | ... 64 more | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3990503#... 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