Hello, I've asked the same question on Richfaces forum but nobody answer that's way I'm posting it to JBoss Seam forum. In my application I want to change the skin of richfaces using seam theme-selector component. I have provided two themes default and modern, default theme uses blueSky skin and modern uses ruby. Snippet from components.xml <theme:theme-selector cookie-enabled="true"> | <theme:available-themes> | <value>default</value> | <value>modern</value> | </theme:available-themes> | </theme:theme-selector> | <web:ajax4jsf-filter enable-cache="false"/> In default.properties I have the following line skin blueSky In modern.properties I have the following line skin ruby Here is my web.xml <context-param> | <param-name>org.ajax4jsf.VIEW_HANDLERS</param-name> | <param-value>com.sun.facelets.FaceletViewHandler</param-value> | </context-param> | <context-param> | <param-name>org.ajax4jsf.SKIN</param-name> | <param-value>#{theme.skin}</param-value> | </context-param> | <context-param> | <param-name>org.ajax4jsf.COMPRESS_SCRIPT</param-name> | <param-value>false</param-value> | </context-param> | <!-- Facelets --> | <context-param> | <param-name>javax.faces.DEFAULT_SUFFIX</param-name> | <param-value>.xhtml</param-value> | </context-param> | <context-param> | <param-name>facelets.DEVELOPMENT</param-name> | <param-value>true</param-value> | </context-param> | <context-param> | <param-name>facelets.REFRESH_PERIOD</param-name> | <param-value>2</param-value> | </context-param> | <context-param> | <param-name>com.sun.faces.validateXml</param-name> | <param-value>true</param-value> | </context-param> | <context-param> | <param-name>com.sun.faces.verifyObjects</param-name> | <param-value>true</param-value> | </context-param> | | <listener> | <listener-class> | org.jboss.seam.servlet.SeamListener | </listener-class> | </listener> | <filter> | <filter-name>Seam Filter</filter-name> | <filter-class>org.jboss.seam.servlet.SeamFilter</filter-class> | </filter> | <filter-mapping> | <filter-name>Seam Filter</filter-name> | <url-pattern>/*</url-pattern> | </filter-mapping> | | <servlet> | <servlet-name>Seam Resource Servlet</servlet-name> | <servlet-class> | org.jboss.seam.servlet.ResourceServlet | </servlet-class> | </servlet> | <servlet-mapping> | <servlet-name>Seam Resource Servlet</servlet-name> | <url-pattern>/seam/resource/*</url-pattern> | </servlet-mapping> | | <servlet> | <servlet-name>Faces Servlet</servlet-name> | <servlet-class>javax.faces.webapp.FacesServlet</servlet-class> | <load-on-startup>1</load-on-startup> | </servlet> | <servlet-mapping> | <servlet-name>Faces Servlet</servlet-name> | <url-pattern>*.seam</url-pattern> | </servlet-mapping> Unfortunately during every request I get following error : 22:27:26,140 ERROR [[default]] Servlet.service() for servlet default threw exception | org.ajax4jsf.framework.skin.SkinNotFoundException: Name for current Skin calculated as null | at org.ajax4jsf.framework.skin.SkinFactoryImpl.getSkin(SkinFactoryImpl.java:92) | at org.ajax4jsf.framework.renderer.compiler.ElementBase$4.getValue(ElementBase.java:302) | at org.ajax4jsf.framework.renderer.compiler.ElementBase$ValueGetter.getStringOrDefault(ElementBase.java:426) | at org.ajax4jsf.framework.renderer.compiler.ClassElement.getString(ClassElement.java:87) | at org.ajax4jsf.framework.renderer.compiler.ClassElement.encode(ClassElement.java:59) | at org.ajax4jsf.framework.renderer.compiler.ElementBase.encode(ElementBase.java:104) | at org.ajax4jsf.framework.renderer.compiler.ElementBase.encode(ElementBase.java:104) | at org.ajax4jsf.framework.renderer.compiler.RootElement.encode(RootElement.java:64) | at org.ajax4jsf.framework.renderer.compiler.ElementBase.encode(ElementBase.java:72) | at org.ajax4jsf.framework.resource.TemplateCSSRenderer.send(TemplateCSSRenderer.java:79) | at org.ajax4jsf.framework.resource.InternetResourceBase.send(InternetResourceBase.java:369) | at org.ajax4jsf.framework.resource.ResourceLifecycle.send(ResourceLifecycle.java:86) | at org.ajax4jsf.framework.resource.InternetResourceService.sendResource(InternetResourceService.java:256) | at org.ajax4jsf.framework.resource.InternetResourceService.serviceResource(InternetResourceService.java:240) | at org.ajax4jsf.framework.resource.InternetResourceService.serviceResource(InternetResourceService.java:141) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:261) | at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:40) | at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) | at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:140) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) | at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) | at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179) | at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) | at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) | at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580) | at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) | at java.lang.Thread.run(Unknown Source) | 22:27:26,171 ERROR [[default]] Servlet.service() for servlet default threw exception | org.ajax4jsf.framework.skin.SkinNotFoundException: Name for current Skin calculated as null | at org.ajax4jsf.framework.skin.SkinFactoryImpl.getSkin(SkinFactoryImpl.java:92) | at org.ajax4jsf.framework.renderer.compiler.ElementBase$4.getValue(ElementBase.java:302) | at org.ajax4jsf.framework.renderer.compiler.ElementBase$ValueGetter.getStringOrDefault(ElementBase.java:426) | at org.ajax4jsf.framework.renderer.compiler.ClassElement.getString(ClassElement.java:87) | at org.ajax4jsf.framework.renderer.compiler.ClassElement.encode(ClassElement.java:59) | at org.ajax4jsf.framework.renderer.compiler.ElementBase.encode(ElementBase.java:104) | at org.ajax4jsf.framework.renderer.compiler.ElementBase.encode(ElementBase.java:104) | at org.ajax4jsf.framework.renderer.compiler.RootElement.encode(RootElement.java:64) | at org.ajax4jsf.framework.renderer.compiler.ElementBase.encode(ElementBase.java:72) | at org.ajax4jsf.framework.resource.TemplateCSSRenderer.send(TemplateCSSRenderer.java:79) | at org.ajax4jsf.framework.resource.InternetResourceBase.send(InternetResourceBase.java:369) | at org.ajax4jsf.framework.resource.ResourceLifecycle.send(ResourceLifecycle.java:86) | at org.ajax4jsf.framework.resource.InternetResourceService.sendResource(InternetResourceService.java:256) | at org.ajax4jsf.framework.resource.InternetResourceService.serviceResource(InternetResourceService.java:240) | at org.ajax4jsf.framework.resource.InternetResourceService.serviceResource(InternetResourceService.java:141) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:261) | at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:40) | at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) | at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:140) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) | at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) | at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179) | at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) | at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) | at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580) | at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) | at java.lang.Thread.run(Unknown Source) Of course page looks like plain html without any styling attached to it. It looks like ajax4jsf can't resolve el #{theme.skin} to "blueSky" or "ruby" it resolvses this el to string "default" I guess. This line suggest this 22:27:26,140 ERROR [[default]] Servlet.service() for servlet default threw exception | org.ajax4jsf.framework.skin.SkinNotFoundException: Name for current Skin calculated as null Ajax4jsf filter is configured in the components.xml but it also doesn't work when I configure it in web.xml. What am I doing wrong ? Do I have to write my own managed bean which holds selected skin name ? Can't I just use theme seam component to select proper skin. When my web.xml looks like : <context-param> | <param-name>org.ajax4jsf.SKIN</param-name> | <param-value>blueSky</param-value> | </context-param> everything works fine even skinning non richfaces components through the xcss. Here is code snippet from sample page : <a4j:loadStyle src="resource://#{themePath}/#{theme.cssSkinMapper}" /> What am I doing wrong ? Best regards ! Marcin Misiewicz View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4079059#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...