Hello, I'm currently trying to create some simple template .ear file which I can use as a basis for further applications. Currently the file only contains a JSP page and a SOAP webservice. Ant is used as a make utility. In some of the cases deployment of the .ear file works fine. However in other cases I only get an "HDScanner Scan failed" error messages. So deploying the same file sometimes works and sometimes fails. I'm using JBoss 5 Beta 4 and the JDK 6U4. This is the output when deploying the file works: 22:38:08,546 INFO [DefaultEndpointRegistry] register: jboss.ws:context=gtest,endpoint=HelloService | 22:38:08,740 INFO [TomcatDeployment] deploy, ctxPath=/gtest, vfsUrl=gtest.ear/gtest.war | 22:38:10,407 INFO [WSDLFilePublisher] WSDL published to: file:/home/gst/jboss/jboss-5.0.0.Beta4/server/default/data/wsdl/gtest.ear/gtest.war/HelloServiceService51396.wsdl | And thats the output when it fails: 21:59:33,878 WARN [HDScanner] Scan failed | org.jboss.deployers.spi.DeploymentException: Exception determining structure: AbstractVFSDeployment(gtest.ear) | at org.jboss.deployers.spi.DeploymentException.rethrowAsDeploymentException(DeploymentException.java:49) | at org.jboss.deployers.structure.spi.helpers.AbstractStructuralDeployers.determineStructure(AbstractStructuralDeployers.java:85) | at org.jboss.deployers.plugins.main.MainDeployerImpl.determineStructure(MainDeployerImpl.java:743) | at org.jboss.deployers.plugins.main.MainDeployerImpl.addDeployment(MainDeployerImpl.java:280) | at org.jboss.deployers.plugins.main.MainDeployerImpl.addDeployment(MainDeployerImpl.java:237) | at org.jboss.system.server.profileservice.hotdeploy.HDScanner.scan(HDScanner.java:270) | at org.jboss.system.server.profileservice.hotdeploy.HDScanner.run(HDScanner.java:221) | at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) | at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) | at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) | at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) | at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181) | at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205) | at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885) | at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) | at java.lang.Thread.run(Thread.java:619) | Caused by: java.lang.RuntimeException: Error determining structure: gtest.ear | at org.jboss.deployment.EARStructure.determineStructure(EARStructure.java:274) | at org.jboss.deployers.vfs.plugins.structure.StructureDeployerWrapper.determineStructure(StructureDeployerWrapper.java:65) | at org.jboss.deployers.vfs.plugins.structure.VFSStructuralDeployersImpl.doDetermineStructure(VFSStructuralDeployersImpl.java:194) | at org.jboss.deployers.vfs.plugins.structure.VFSStructuralDeployersImpl.determineStructure(VFSStructuralDeployersImpl.java:218) | at org.jboss.deployers.structure.spi.helpers.AbstractStructuralDeployers.determineStructure(AbstractStructuralDeployers.java:77) | ... 14 more | Caused by: java.lang.NullPointerException | at org.jboss.deployment.EARStructure.determineStructure(EARStructure.java:155) | ... 18 more Any hints on what could be the cause of this problem? I've uploaded the source to http://virtual.sysfrog.org/~gst/gtest/gtest.zip and the compiled .ear file to http://virtual.sysfrog.org/~gst/gtest/gtest.ear. The strange thing is that the error does not occur in all of the cases. bye, Guenther View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4128958#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...