After upgrading to 1.1.0-alpha-4 I'm getting the stacktrace below. I'm running tests with JBoss 7.1.2 and the according Arquillian which is build upon ShrinkWrap 1.0.1. Any hint is appreciated!

org.jboss.shrinkwrap.api.IllegalOverwriteException: Cannot add requested path /org/hamcrest/BaseDescription.class to archive arquillian-junit.jar; path already exists

at org.jboss.shrinkwrap.impl.base.MemoryMapArchiveBase.addAsset(MemoryMapArchiveBase.java:205)

at org.jboss.shrinkwrap.impl.base.MemoryMapArchiveBase.add(MemoryMapArchiveBase.java:125)

at org.jboss.shrinkwrap.impl.base.container.ContainerBase.add(ContainerBase.java:152)

at org.jboss.shrinkwrap.impl.base.container.ContainerBase$2.classFound(ContainerBase.java:1488)

at org.jboss.shrinkwrap.impl.base.URLPackageScanner.foundClass(URLPackageScanner.java:178)

at org.jboss.shrinkwrap.impl.base.URLPackageScanner.handleArchiveByFile(URLPackageScanner.java:146)

at org.jboss.shrinkwrap.impl.base.URLPackageScanner.handle(URLPackageScanner.java:161)

at org.jboss.shrinkwrap.impl.base.URLPackageScanner.scanPackage(URLPackageScanner.java:127)

at org.jboss.shrinkwrap.impl.base.container.ContainerBase.addPackage(ContainerBase.java:1492)

at org.jboss.shrinkwrap.impl.base.container.ContainerBase.addPackages(ContainerBase.java:1457)

at org.jboss.shrinkwrap.impl.base.container.ContainerBase.addPackages(ContainerBase.java:1437)

at org.jboss.arquillian.junit.container.JUnitDeploymentAppender.buildArchive(JUnitDeploymentAppender.java:39)

at org.jboss.arquillian.container.test.spi.client.deployment.CachedAuxilliaryArchiveAppender.createAuxiliaryArchive(CachedAuxilliaryArchiveAppender.java:43)

at org.jboss.arquillian.container.test.impl.client.deployment.DeploymentGenerator.loadAuxiliaryArchives(DeploymentGenerator.java:209)

at org.jboss.arquillian.container.test.impl.client.deployment.DeploymentGenerator.buildTestableDeployments(DeploymentGenerator.java:160)

at org.jboss.arquillian.container.test.impl.client.deployment.DeploymentGenerator.createTestableDeployments(DeploymentGenerator.java:148)

at org.jboss.arquillian.container.test.impl.client.deployment.DeploymentGenerator.generateDeployment(DeploymentGenerator.java:85)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)

at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:99)

at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:81)

at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:135)

at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:115)

at org.jboss.arquillian.core.impl.EventImpl.fire(EventImpl.java:67)

at org.jboss.arquillian.container.test.impl.client.ContainerEventController.execute(ContainerEventController.java:100)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)

at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:99)

at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:81)

at org.jboss.arquillian.test.impl.TestContextHandler.createClassContext(TestContextHandler.java:75)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)

at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)

at org.jboss.arquillian.test.impl.TestContextHandler.createSuiteContext(TestContextHandler.java:60)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)

at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)

at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:135)

at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:115)

at org.jboss.arquillian.test.impl.EventTestRunnerAdaptor.beforeClass(EventTestRunnerAdaptor.java:80)

at org.jboss.arquillian.junit.Arquillian$2.evaluate(Arquillian.java:182)

at org.jboss.arquillian.junit.Arquillian.multiExecute(Arquillian.java:314)

at org.jboss.arquillian.junit.Arquillian.access$100(Arquillian.java:46)

at org.jboss.arquillian.junit.Arquillian$3.evaluate(Arquillian.java:199)

at org.junit.runners.ParentRunner.run(ParentRunner.java:300)

at org.jboss.arquillian.junit.Arquillian.run(Arquillian.java:147)

at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)

at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)

at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)

at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)

at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)

at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:113)

at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)