"Application validation did not succeed" Error

[BlakeMcKenna]

have been having trouble publishing VB.Net 2005 applications due to an error when I try to execute a new version of an application. Most of our online apps are "Click Once" applications. The file everything keeps blowing up on is an Error Handling DLL that I wrote. It's in everyone of our .Net apps. But just recently...it's giving me problems. So...I tried pulling the DLL source code out of VSS and recompiling the code while incrementing the version. The DLL is signed. I put the new DLL in back in the same location as usual. However, whenever I make a change to an app, recompile it, and try to publish it...I get the "Application validation did not succeed" Error. Please see below.
Thanks,

This is really causing problems with our production schedules.

PLATFORM VERSION INFO
Windows : 5.2.3790.131072 (Win32NT)
Common Language Runtime : 2.0.50727.1433
System.Deployment.dll : 2.0.50727.1433 (REDBITS.050727-1400)
mscorwks.dll : 2.0.50727.1433 (REDBITS.050727-1400)
dfdll.dll : 2.0.50727.1433 (REDBITS.050727-1400)
dfshim.dll : 2.0.50727.1433 (REDBITS.050727-1400)

SOURCES
Deployment url : file://morpheus/itsoftware/VBNET/DRIP/Drip.application
Deployment Provider url : file://morpheus/itsoftware/VBNET/DRIP/Drip.application
Application url : file://morpheus/itsoftware/VBNET/DRIP/Drip_1_0_0_64/Drip.exe.manifest

IDENTITIES
Deployment Identity : Drip.application, Version=1.0.0.64, Culture=neutral, PublicKeyToken=3483db5b5b086897, processorArchitecture=x86
Application Identity : Drip.exe, Version=1.0.0.64, Culture=neutral, PublicKeyToken=3483db5b5b086897, processorArchitecture=x86, 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 \\Morpheus\itsoftware\VBNET\DRIP\Drip.application resulted in exception. Following failure messages were detected:
+ Reference in the manifest does not match the identity of the downloaded assembly ErrorHandler.dll.

COMPONENT STORE TRANSACTION FAILURE SUMMARY
No transaction error was detected.

WARNINGS
There were no warnings during this operation.

OPERATION PROGRESS STATUS
* [11/11/2008 8:17:53 AM] : Activation of \\Morpheus\itsoftware\VBNET\DRIP\Drip.application has started.
* [11/11/2008 8:17:53 AM] : Processing of deployment manifest has successfully completed.
* [11/11/2008 8:17:53 AM] : Installation of the application has started.
* [11/11/2008 8:17:53 AM] : Processing of application manifest has successfully completed.
* [11/11/2008 8:17:54 AM] : Request of trust and detection of platform is complete.

ERROR DETAILS
Following errors were detected during this operation.
* [11/11/2008 8:17:54 AM] System.Deployment.Application.InvalidDeploymentException (RefDefValidation)
- Reference in the manifest does not match the identity of the downloaded assembly ErrorHandler.dll.
- 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.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)
at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state)

COMPONENT STORE TRANSACTION DETAILS
No transaction information is available.