Включение ClickOnce "Сбой активации" FileNotFoundException

Я только что развернул обновление для приложения clickonce. Я развернул десятки обновлений без проблем. Теперь, внезапно, с этим обновлением, все мои пользователи сообщают об этой ошибке:

РЕЗЮМЕ ОШИБКИ

Below is a summary of the errors, details of these errors are listed later in the log.
    * Activation of C:\Users\XXX\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\XXX\XXX\XXX.appref-ms| resulted in exception. Following failure messages were detected:
        + Activation failed.
        + The system cannot find the file specified. (Exception from HRESULT: 0x80070002)

В ходе этой операции были обнаружены ошибки.

* [3/15/2012 3:22:34 PM] System.Deployment.Application.DeploymentException (Activation)
        - Activation failed.
        - Source: System.Deployment
        - Stack trace:
            at System.Deployment.Application.ComponentStore.ActivateApplication(DefinitionAppId appId, String activationParameter, Boolean useActivationParameter)
            at System.Deployment.Application.SubscriptionStore.ActivateApplication(DefinitionAppId appId, String activationParameter, Boolean useActivationParameter)
            at System.Deployment.Application.ApplicationActivator.Activate(DefinitionAppId appId, AssemblyManifest appManifest, String activationParameter, Boolean useActivationParameter)
            at System.Deployment.Application.ApplicationActivator.ProcessOrFollowShortcut(String shortcutFile, String& errorPageUrl, TempFile& deployFile)
            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)
        --- Inner Exception ---
        System.IO.FileNotFoundException
        - The system cannot find the file specified. (Exception from HRESULT: 0x80070002)
        - Source: System.Deployment
        - Stack trace:
            at System.Deployment.Application.NativeMethods.CorLaunchApplication(UInt32 hostType, String applicationFullName, Int32 manifestPathsCount, String[] manifestPaths, Int32 activationDataCount, String[] activationData, PROCESS_INFORMATION processInformation)
            at System.Deployment.Application.ComponentStore.ActivateApplication(DefinitionAppId appId, String activationParameter, Boolean useActivationParameter)

Конечно, это не говорит мне, какой файл он ищет, что не удается. Я в тупике!