Application Validation did not succeed. Unable to continue

Hi,
I published my client application using Powershell script.
Mode                LastWriteTime     Length Name
----                -------------     ------ ----
d----        10/26/2009   4:52 PM            1.0.0.60
BE.App.Launcher.exe.manifest successfully created
BE.App.Launcher.exe.manifest successfully signed
BE.Client.application successfully created
BE.Client.application successfully signed

It doent throw any error. But when i install, it gives error . saying Application Validation didnot succeeed.
Detail message is:

PLATFORM VERSION INFO
 Windows    : 5.1.2600.131072 (Win32NT)
 Common Language Runtime  : 2.0.50727.3053
 System.Deployment.dll   : 2.0.50727.3053 (netfxsp.050727-3000)
 mscorwks.dll    : 2.0.50727.3053 (netfxsp.050727-3000)
 dfdll.dll    : 2.0.50727.3053 (netfxsp.050727-3000)
 dfshim.dll    : 2.0.50727.3053 (netfxsp.050727-3000)
 
SOURCES
 Deployment url   : fBE.Client.application
 Deployment Provider url  : BE.Client.application
 Application url   : 1.0.0.60/BE.App.Launcher.exe.manifest
 
IDENTITIES
 Deployment Identity  : Beta Engine - DEV.app, Version=1.0.0.60, Culture=neutral, PublicKeyToken=bdf509634bbb0d1f, processorArchitecture=msil
 Application Identity  : Beta Engine - DEV.exe, Version=1.0.0.60, Culture=neutral, PublicKeyToken=bdf509634bbb0d1f, processorArchitecture=msil, type=win32
 
APPLICATION SUMMARY
 * Installable application.
 
ERROR SUMMARY
 Below is a summary of the errors, details of these errors are listed later in the log.
 * Activation of \BE.Client.application resulted in exception. Following failure messages were detected:
  + Reference in the manifest does not match the identity of the downloaded assembly BE.App.Launcher.exe.
 
COMPONENT STORE TRANSACTION FAILURE SUMMARY
 No transaction error was detected.
 
WARNINGS
 There were no warnings during this operation.
 
OPERATION PROGRESS STATUS
 * [10/26/2009 3:54:12 PM] : Activation of \BE.Client.application has started.
 * [10/26/2009 3:54:12 PM] : Processing of deployment manifest has successfully completed.
 * [10/26/2009 3:54:12 PM] : Installation of the application has started.
 * [10/26/2009 3:54:12 PM] : Processing of application manifest has successfully completed.
 * [10/26/2009 3:54:16 PM] : Request of trust and detection of platform is complete.
 
ERROR DETAILS
 Following errors were detected during this operation.
 * [10/26/2009 3:54:37 PM] System.Deployment.Application.InvalidDeploymentException (RefDefValidation)
  - Reference in the manifest does not match the identity of the downloaded assembly BE.App.Launcher.exe.
  - Source: System.Deployment
  - Stack trace:
   at System.Deployment.Application.DownloadManager.ProcessDownloadedFile(Object sender, DownloadEventArgs e)
   at System.Deployment.Application.FileDownloader.DownloadModifiedEventHandler.Invoke(Object sender, DownloadEventArgs e)
   at System.Deployment.Application.FileDownloader.OnModified()
   at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)
   at System.Deployment.Application.SystemNetDownloader.DownloadAllFiles()
   at System.Deployment.Application.FileDownloader.Download(SubscriptionState subState)
   at System.Deployment.Application.DownloadManager.DownloadDependencies(SubscriptionState subState, AssemblyManifest deployManifest, AssemblyManifest appManifest, Uri sourceUriBase, String targetDirectory, String group, IDownloadNotification notification, DownloadOptions options)
   at System.Deployment.Application.ApplicationActivator.DownloadApplication(SubscriptionState subState, ActivationDescription actDesc, Int64 transactionId, TempDirectory& downloadTemp)
   at System.Deployment.Application.ApplicationActivator.InstallApplication(SubscriptionState& subState, ActivationDescription actDesc)
   at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivation(Uri activationUri, Boolean isShortcut, String textualSubId, String deploymentProviderUrlFromExtension, BrowserSettings browserSettings, String& errorPageUrl)
   at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state)
 
COMPONENT STORE TRANSACTION DETAILS
 No transaction information is available.

Can Somebody help/ Ima using Visual Studion 2008 for building application and then Powershell to Publish for clickonce.