I have built a new machine from scratch and configure it for a lab environment. I used imagex from a usb winpe boot to push my captured image to the distribution server. everything goes fine. When I go to the deploy. workbench and after i add the custom win as an os, then try to add it as a build, I always get the Error during wizard processing "An unexpected error occurred while processing the wizard results. Collection was modified; enumeration operation may not execute. Error Details: Assembly: mscorlib Assembly Version: 2.0.0.0 File Version: 2.0.50727.832 (QFE.050727-8300) Assembly: Microsoft.ManagementConsole Assembly Version: 3.0.0.0 File Version: 5.2.3790.3959 Assembly: MMCFxCommon Assembly Version: 3.0.0.0 File Version: 5.2.3790.3959 Assembly: System Assembly Version: 2.0.0.0 File Version: 2.0.50727.832 (QFE.050727-8300) Assembly: System.Windows.Forms Assembly Version: 2.0.0.0 File Version: 2.0.50727.832 (QFE.050727-8300) Assembly: System.Drawing Assembly Version: 2.0.0.0 File Version: 2.0.50727.832 (QFE.050727-8300) Assembly: System.Configuration Assembly Version: 2.0.0.0 File Version: 2.0.50727.832 (QFE.050727-8300) Assembly: System.Xml Assembly Version: 2.0.0.0 File Version: 2.0.50727.832 (QFE.050727-8300) Assembly: Microsoft.BDD.Workbench Assembly Version: 3.0.0.0 File Version: 3.0.142.0 Assembly: Microsoft.BDD.ConfigManager Assembly Version: 3.0.0.0 File Version: 3.0.142.0 Assembly: System.Data Assembly Version: 2.0.0.0 File Version: 2.0.50727.832 (QFE.050727-8300) Assembly: System.Management Assembly Version: 2.0.0.0 File Version: 2.0.50727.832 (QFE.050727-8300) Assembly: Microsoft.ComponentStudio.ComponentPlatformInterface Assembly Version: 6.0.0.0 File Version: 6.0.6000.16386 (vista_rtm.061101-2205) Assembly: Microsoft.ComponentStudio.ComponentPlatformImplementation Assembly Version: 6.0.0.0 File Version: 6.0.6000.16386 (vista_rtm.061101-2205) Assembly: Microsoft.ComponentStudio.Common Assembly Version: 6.0.0.0 File Version: 6.0.6000.16386 (vista_rtm.061101-2205) Assembly: Microsoft.ComponentStudio.Serializer Assembly Version: 6.0.0.0 File Version: 6.0.6000.16386 (vista_rtm.061101-2205) System.InvalidOperationException: Collection was modified; enumeration operation may not execute. at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) at System.Collections.Generic.List`1.Enumerator.MoveNext() at Microsoft.ComponentStudio.ComponentPlatformInterface.AnswerFile.ReadSettingsFromUnattendNode(Node unattendRoot) at Microsoft.ComponentStudio.ComponentPlatformInterface.AnswerFile.DoLoad(Boolean useImagePathInAnswerFile) at Microsoft.ComponentStudio.ComponentPlatformInterface.AnswerFile..ctor(String path, OfflineImageInfo imageInfo) at Microsoft.ComponentStudio.ComponentPlatformInterface.Cpi.OpenAnswerFile(String path, OfflineImageInfo imageInfo) at Microsoft.BDD.ConfigManager.UnattendManager..ctor(String uPath, String catPath) at Microsoft.BDD.ConfigManager.BuildItem.Update() at Microsoft.BDD.ConfigManager.ConfigManagerBase.Add(ConfigItemBase theItem) at Microsoft.BDD.Workbench.BuildView.OnWizardComplete(String wizardFile, XmlDocument wizardResults, ProgressEventHandler theEventHandler) It then creates the build. If refresh the deployment points and try to boot the new wim from winpe using the captured image, I get a blue screen when it starts the vista intsall with an error message pertaining to a "Bad IRQL". Has anyone seen this or can tell me what I am doing wrong? Thanks