While trying to import a virtual machine I got very generic error message in the web interface "Failed to import Vm host to ovirt", in the engine.log I got this java exception below.  After doing some digging I realized the problem was I did not map the network bridge names from my previous machine to the bridge name used on the current machine. After modifing the master/vms/e94464d3-ae44-45ac-b09b-0e17f784a378/e94464d3-ae44-45ac-b09b-0e17f784a378.ovf file and updating the references to the bridge name the import worked as expected.  Could more information be added to the error message to indicate the source of the problem?  Are there any plans to allow the network configuration to be modified as part of the import?

2012-09-10 17:04:29,436 INFO  [org.ovirt.engine.core.vdsbroker.irsbroker.GetVmsInfoVDSCommand] (ajp--0.0.0.0-8009-3) START, GetVmsInfoVDSCommand(storagePoolId = 04f7efb6-f9f8-11e1-af92-6805ca00c345, ignoreFailoverLimit = false, compatabilityVersion = null, storageDomainId = 913e496b-b0a3-4b2e-a481-7d1a101c89db, vmIdList = null), log id: 223efce6

2012-09-10 17:04:29,446 INFO  [org.ovirt.engine.core.vdsbroker.irsbroker.GetVmsInfoVDSCommand] (ajp--0.0.0.0-8009-3) FINISH, GetVmsInfoVDSCommand, log id: 223efce6

2012-09-10 17:04:29,470 INFO  [org.ovirt.engine.core.vdsbroker.irsbroker.GetImageDomainsListVDSCommand] (ajp--0.0.0.0-8009-3) START, GetImageDomainsListVDSCommand(storagePoolId = 04f7efb6-f9f8-11e1-af92-6805ca00c345, ignoreFailoverLimit = false, compatabilityVersion = null, imageGroupId = b9d80d3d-0b3d-4249-8f12-3bc7e8b93464), log id: 682b1cec

2012-09-10 17:04:29,483 INFO  [org.ovirt.engine.core.vdsbroker.irsbroker.GetImageDomainsListVDSCommand] (ajp--0.0.0.0-8009-3) FINISH, GetImageDomainsListVDSCommand, return: [], log id: 682b1cec

2012-09-10 17:04:29,484 INFO  [org.ovirt.engine.core.vdsbroker.irsbroker.DoesImageExistVDSCommand] (ajp--0.0.0.0-8009-3) START, DoesImageExistVDSCommand(storagePoolId = 04f7efb6-f9f8-11e1-af92-6805ca00c345, ignoreFailoverLimit = false, compatabilityVersion = null, storageDomainId = 913e496b-b0a3-4b2e-a481-7d1a101c89db, imageGroupId = b9d80d3d-0b3d-4249-8f12-3bc7e8b93464, imageId = 60fb55ea-1450-4f3e-b3ac-4ba0db3e80ab), log id: 6677ff61

2012-09-10 17:04:29,548 INFO  [org.ovirt.engine.core.vdsbroker.irsbroker.DoesImageExistVDSCommand] (ajp--0.0.0.0-8009-3) FINISH, DoesImageExistVDSCommand, return: true, log id: 6677ff61

2012-09-10 17:04:29,602 INFO  [org.ovirt.engine.core.bll.ImportVmCommand] (pool-3-thread-49) [30fbeac] Running command: ImportVmCommand internal: false. Entities affected :  ID: 70fc57d2-4f51-4029-a7ce-9e7705b27723 Type: Storage

2012-09-10 17:04:29,607 INFO  [org.ovirt.engine.core.utils.transaction.TransactionSupport] (pool-3-thread-49) [30fbeac] transaction rolled back

2012-09-10 17:04:29,608 ERROR [org.ovirt.engine.core.bll.ImportVmCommand] (pool-3-thread-49) [30fbeac] Command org.ovirt.engine.core.bll.ImportVmCommand throw exception: java.lang.StringIndexOutOfBoundsException: String index out of range: 4

        at java.lang.AbstractStringBuilder.deleteCharAt(AbstractStringBuilder.java:766) [rt.jar:1.6.0_24]

        at java.lang.StringBuilder.deleteCharAt(StringBuilder.java:280) [rt.jar:1.6.0_24]

        at org.ovirt.engine.core.bll.ImportVmCommand.auditInvalidInterfaces(ImportVmCommand.java:933) [engine-bll.jar:]

        at org.ovirt.engine.core.bll.ImportVmCommand.AddVmNetwork(ImportVmCommand.java:801) [engine-bll.jar:]

        at org.ovirt.engine.core.bll.ImportVmCommand$3.runInTransaction(ImportVmCommand.java:488) [engine-bll.jar:]

        at org.ovirt.engine.core.bll.ImportVmCommand$3.runInTransaction(ImportVmCommand.java:482) [engine-bll.jar:]

        at org.ovirt.engine.core.utils.transaction.TransactionSupport.executeInNewTransaction(TransactionSupport.java:204) [engine-utils.jar:]

        at org.ovirt.engine.core.bll.ImportVmCommand.addVmToDb(ImportVmCommand.java:482) [engine-bll.jar:]

        at org.ovirt.engine.core.bll.ImportVmCommand.executeCommand(ImportVmCommand.java:476) [engine-bll.jar:]

        at org.ovirt.engine.core.bll.CommandBase.ExecuteWithoutTransaction(CommandBase.java:804) [engine-bll.jar:]

        at org.ovirt.engine.core.bll.CommandBase.executeActionInTransactionScope(CommandBase.java:896) [engine-bll.jar:]

        at org.ovirt.engine.core.bll.CommandBase.runInTransaction(CommandBase.java:1203) [engine-bll.jar:]

        at org.ovirt.engine.core.utils.transaction.TransactionSupport.executeInSuppressed(TransactionSupport.java:168) [engine-utils.jar:]

        at org.ovirt.engine.core.utils.transaction.TransactionSupport.executeInScope(TransactionSupport.java:107) [engine-utils.jar:]

        at org.ovirt.engine.core.bll.CommandBase.Execute(CommandBase.java:911) [engine-bll.jar:]

        at org.ovirt.engine.core.bll.CommandBase.ExecuteAction(CommandBase.java:268) [engine-bll.jar:]

        at org.ovirt.engine.core.bll.MultipleActionsRunner.executeValidatedCommands(MultipleActionsRunner.java:182) [engine-bll.jar:]

        at org.ovirt.engine.core.bll.MultipleActionsRunner.RunCommands(MultipleActionsRunner.java:162) [engine-bll.jar:]

        at org.ovirt.engine.core.bll.MultipleActionsRunner$1.run(MultipleActionsRunner.java:84) [engine-bll.jar:]

        at org.ovirt.engine.core.utils.threadpool.ThreadPoolUtil$InternalWrapperRunnable.run(ThreadPoolUtil.java:64) [engine-utils.jar:]

        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [rt.jar:1.6.0_24]

        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) [rt.jar:1.6.0_24]

        at java.util.concurrent.FutureTask.run(FutureTask.java:166) [rt.jar:1.6.0_24]

        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [rt.jar:1.6.0_24]

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [rt.jar:1.6.0_24]

        at java.lang.Thread.run(Thread.java:679) [rt.jar:1.6.0_24]

2012-09-10 17:04:29,641 INFO  [org.ovirt.engine.core.vdsbroker.irsbroker.GetVmsInfoVDSCommand] (ajp--0.0.0.0-8009-10) START, GetVmsInfoVDSCommand(storagePoolId = 04f7efb6-f9f8-11e1-af92-6805ca00c345, ignoreFailoverLimit = false, compatabilityVersion = null, storageDomainId = 913e496b-b0a3-4b2e-a481-7d1a101c89db, vmIdList = null), log id: 1ef604dc

2012-09-10 17:04:29,648 INFO  [org.ovirt.engine.core.vdsbroker.irsbroker.GetVmsInfoVDSCommand] (ajp--0.0.0.0-8009-10) FINISH, GetVmsInfoVDSCommand, log id: 1ef604dc