JBoss 7 (Jenkins build 1253) meanwhile works regarding the NoMessageBodyWriterFoundFailure. However, when I want to also use Seam REST, I'm getting a NPE at org.jboss.resteasy.logging.Logger.classInClasspath(Logger.java:62). Please see the stacktrace: 20:20:06,541 INFO [org.jboss.weld] (MSC service thread 1-1) Processing CDI deployment: swe2.ear 20:20:06,566 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC00001: Failed to start service jboss.deployment.unit."swe2.ear".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.unit."swe2.ear".POST_MODULE: Failed to process phase POST_MODULE of deployment "swe2.ear" at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUn itPhaseService.java:121) at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerI mpl.java:1738) at org.jboss.msc.service.ServiceControllerImpl$ClearTCCLTask.run(ServiceControl lerImpl.java:2325) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.ja va:886) [:1.6.0_26] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:9 08) [:1.6.0_26] at java.lang.Thread.run(Thread.java:662) [:1.6.0_26] Caused by: java.lang.RuntimeException: Error instantiating class org.jboss.resteasy.cdi.ResteasyCdiExtension at org.jboss.weld.util.ServiceLoader.prepareInstance(ServiceLoader.java:282) at org.jboss.weld.util.ServiceLoader.loadService(ServiceLoader.java:238) at org.jboss.weld.util.ServiceLoader.loadServiceFile(ServiceLoader.java:194) at org.jboss.weld.util.ServiceLoader.reload(ServiceLoader.java:157) at org.jboss.weld.util.ServiceLoader.iterator(ServiceLoader.java:346) at org.jboss.as.weld.deployment.processors.WeldPortableExtensionProcessor.loadA ttachments(WeldPortableExtensionProcessor.java:84) at org.jboss.as.weld.deployment.processors.WeldPortableExtensionProcessor.deplo y(WeldPortableExtensionProcessor.java:78) at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUn itPhaseService.java:115) ... 5 more Caused by: java.lang.ExceptionInInitializerError at org.jboss.resteasy.cdi.ResteasyCdiExtension.<init>(ResteasyCdiExtension.java :44) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [:1.6.0_26] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAcces sorImpl.java:39) [:1.6.0_26] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstruc torAccessorImpl.java:27) [:1.6.0_26] at java.lang.reflect.Constructor.newInstance(Constructor.java:513) [:1.6.0_26] at org.jboss.weld.util.ServiceLoader.prepareInstance(ServiceLoader.java:273) ... 12 more Caused by: java.lang.NullPointerException at org.jboss.resteasy.logging.Logger.classInClasspath(Logger.java:62) at org.jboss.resteasy.logging.Logger.<clinit>(Logger.java:75) ... 18 more ------------------------------------------------------------------------------ Simplify data backup and recovery for your virtual environment with vRanger. Installation's a snap, and flexible recovery options mean your data is safe, secure and there when you need it. Data protection magic? Nope - It's vRanger. Get your free trial download today. http://p.sf.net/sfu/quest-sfdev2dev _______________________________________________ Resteasy-developers mailing list Resteasy-developers(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/resteasy-developers