The hello_world_header_wsdl sample of Riftsaw 2.0-CR2 produces the following exception:

11:55:18,295 INFO [PhaseInterceptorChain] Application has thrown exception, unwinding now
org.apache.cxf.interceptor.Fault: wrong number of arguments
at org.jboss.wsf.stack.cxf.AbstractInvoker.createFault(AbstractInvoker.java:209)
at org.jboss.wsf.stack.cxf.AbstractInvoker._invokeInternal(AbstractInvoker.java:180)
at org.jboss.wsf.stack.cxf.AbstractInvoker.invoke(AbstractInvoker.java:104)
at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:57)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at org.apache.cxf.workqueue.SynchronousExecutor.execute(SynchronousExecutor.java:37)
at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:95)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:236)
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:89)
at org.apache.cxf.transport.servlet.ServletDestination.invoke(ServletDestination.java:99)
at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:368)
at org.jboss.wsf.stack.cxf.ServletControllerExt.invoke(ServletControllerExt.java:160)
at org.jboss.wsf.stack.cxf.RequestHandlerImpl.handleHttpRequest(RequestHandlerImpl.java:61)
at org.jboss.wsf.stack.cxf.CXFServletExt.service(CXFServletExt.java:136)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
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:235)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalArgumentException: wrong number of arguments
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.wsf.container.jboss50.invocation.InvocationHandlerJSE.invoke(InvocationHandlerJSE.java:108)
at org.jboss.wsf.stack.cxf.AbstractInvoker._invokeInternal(AbstractInvoker.java:154)

This is related to https://issues.apache.org/jira/browse/CXF-2498, even if that was about no-args method only. CXF 2.2.5 is not affected by that (verified through JBWS-CXF 3.2.2 on AS 5.1.0.GA)