I'm migrating an app from JBoss 5.0.1 to JBoss 7.1 and getting an error when starting deployment of the EAR. It is almost impossible for me to troubleshoot as the error message is too vague. Please add the virtual file name and any other information that would make this error useful, thank you.

[org.jboss.msc.service.fail] (MSC service thread 1-1) MSC00001: Failed to start service jboss.deployment.subunit."xxx-ear.ear"."xxx.war".PARSE: org.jboss.msc.service.StartException in service jboss.deployment.subunit."xxx-ear.ear"."xxx.war".PARSE: Failed to process phase PARSE of subdeployment "oflows.war" of deployment "xxx-ear.ear"
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:121) [jboss-as-server-7.1.0.CR1b.jar:7.1.0.CR1b]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1824) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1759) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_24]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_24]
at java.lang.Thread.run(Thread.java:662) [:1.6.0_24]
Caused by: java.lang.IllegalArgumentException: Given parent is not an ancestor of this virtual file
at org.jboss.vfs.VirtualFile.getPathNameRelativeTo(VirtualFile.java:116)
at org.jboss.vfs.VirtualFile.getPathNameRelativeTo(VirtualFile.java:122)
at org.jboss.vfs.VirtualFile.getPathNameRelativeTo(VirtualFile.java:122)
at org.jboss.vfs.VirtualFile.getPathNameRelativeTo(VirtualFile.java:122)
at org.jboss.vfs.VirtualFile.getPathNameRelativeTo(VirtualFile.java:122)
at org.jboss.vfs.VirtualFile.getPathNameRelativeTo(VirtualFile.java:122)
at org.jboss.vfs.VirtualFile.getPathNameRelativeTo(VirtualFile.java:122)
at org.jboss.vfs.VirtualFile.getPathNameRelativeTo(VirtualFile.java:122)
at org.jboss.vfs.VirtualFile.getPathNameRelativeTo(VirtualFile.java:122)
at org.jboss.vfs.VirtualFile.getPathNameRelativeTo(VirtualFile.java:122)
at org.jboss.vfs.VirtualFile.getPathNameRelativeTo(VirtualFile.java:110)
at org.jboss.as.web.deployment.TldParsingDeploymentProcessor.processTlds(TldParsingDeploymentProcessor.java:105)
at org.jboss.as.web.deployment.TldParsingDeploymentProcessor.deploy(TldParsingDeploymentProcessor.java:81)
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:115) [jboss-as-server-7.1.0.CR1b.jar:7.1.0.CR1b]
... 5 more