The automatic generation of a wsdl to deploy time crashes, if there is a method which returns void. Changing the return parameter to everything else besides void (i.e. String, boolean, ..) fixes the problem. Using JBoss 4.04 with JBossWS 1.0.4 + jboss-xml-binding.jar 1.0.0.CR7. Seems this bug http://jira.jboss.org/jira/browse/JBWS-647 is back in 1.0.4 again. anonymous wrote : 2006-11-22 16:16:35,181 ERROR [org.jboss.deployment.MainDeployer] Could not create deployment: file:/D:/jzx/zxdev_jboss/server/default/tmp/deploy/tmp19079zxapp_webservices.ear-contents/zxapp_webservices_logic.jar | java.lang.NullPointerException | at java.lang.Class.isAssignableFrom(Native Method) | at org.jboss.ws.tools.helpers.JavaToWSDLHelper.generateType(JavaToWSDLHelper.java:559) | at org.jboss.ws.tools.helpers.JavaToWSDLHelper.generateTypesForXSD(JavaToWSDLHelper.java:146) | at org.jboss.ws.tools.JavaToWSDL11.handleJavaToWSDLGeneration(JavaToWSDL11.java:249) | at org.jboss.ws.tools.JavaToWSDL11.generate(JavaToWSDL11.java:170) | at org.jboss.ws.tools.JavaToWSDL.generate(JavaToWSDL.java:321) | at org.jboss.ws.deployment.AnnotationsMetaDataBuilder.processOrGenerateWSDL(AnnotationsMetaDataBuilder.java:93) | at org.jboss.ws.deployment.JSR181MetaDataBuilder.setupEndpointFromAnnotations(JSR181MetaDataBuilder.java:177) | at org.jboss.ws.deployment.JSR181MetaDataBuilderEJB3.buildMetaData(JSR181MetaDataBuilderEJB3.java:75) | at org.jboss.ws.deployment.ServiceEndpointDeployer.create(ServiceEndpointDeployer.java:106) | at org.jboss.ws.integration.jboss.DeployerInterceptor.create(DeployerInterceptor.java:80) | at org.jboss.ws.integration.jboss.DeployerInterceptorEJB.create(DeployerInterceptorEJB.java:44) | at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.create(SubDeployerInterceptorSupport.java:180) | at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:91) | at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) | at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) | at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) | at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) | at $Proxy35.create(Unknown Source) | at org.jboss.deployment.MainDeployer.create(MainDeployer.java:953) | at org.jboss.deployment.MainDeployer.create(MainDeployer.java:943) | at org.jboss.deployment.MainDeployer.create(MainDeployer.java:943) | at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:807) | at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:771) | at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source) | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) | at java.lang.reflect.Method.invoke(Method.java:585) | at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) | at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) | at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133) | at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) | at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142) | at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) | at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) | at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) | at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) | at $Proxy6.deploy(Unknown Source) | at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421) | at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:610) | at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263) | at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:274) | at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:225) | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3987912#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...