Eu tenho um aplicativo ClickOnce. Em uma máquina - Windows 7 (funciona em outras) - uma atualização falhou - a instalação é servida pelo Apache. O log inteiro é ... longo, mas a única coisa que erros são:

ERROR DETAILS
    Following errors were detected during this operation.
    * [26.01.2010 10:55:07] System.Runtime.InteropServices.COMException
        - A device attached to the system is not functioning. (Exception from HRESULT: 0x8007001F)
        - Source: System.Deployment
        - Stack trace:
            at System.Deployment.Internal.Isolation.IStore.Transact(IntPtr 
cOperation, StoreTransactionOperation[] rgOperations, UInt32[] rgDispositions, Int32[] rgResults)
            at System.Deployment.Internal.Isolation.Store.Transact(StoreTransactionOperation[] operations, UInt32[] rgDispositions, Int32[] rgResults)
            at System.Deployment.Application.ComponentStore.SubmitStoreTransaction(StoreTransactionContext storeTxn, SubscriptionState subState)
            at System.Deployment.Application.ComponentStore.SubmitStoreTransactionCheckQuota(StoreTransactionContext storeTxn, SubscriptionState subState)
            at System.Deployment.Application.ComponentStore.CommitApplication(SubscriptionState subState, CommitApplicationParams commitParams)
            at System.Deployment.Application.SubscriptionStore.CommitApplication(SubscriptionState& subState, CommitApplicationParams commitParams)
            at System.Deployment.Application.ApplicationActivator.InstallApplication(SubscriptionState& subState, ActivationDescription actDesc)
            at System.Deployment.Application.ApplicationActivator.ConsumeUpdatedDeployment(SubscriptionState& subState, ActivationDescription actDesc)
            at System.Deployment.Application.ApplicationActivator.PerformDeploymentUpdate(SubscriptionState& subState, String& errorPageUrl)
            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)

COMPONENT STORE TRANSACTION DETAILS
    * Transaction at [26.01.2010 10:55:07]
        + System.Deployment.Internal.Isolation.StoreOperationStageComponent
            - Status: Installed
            - HRESULT: 0x0
            - Manifest: 9P1J1J04.O7B.application
             [Cut.. More of the same with HRESULT 0x0]
        + System.Deployment.Internal.Isolation.StoreOperationSetDeploymentMetadata
            - Status: Set
            - HRESULT: 0x0
        + System.Deployment.Internal.Isolation.StoreTransactionOperationType (27)
            - HRESULT: 0x8007001f

Isso não é muito útil. Alguém já experimentou algo semelhante e localizou uma solução? Ouvi sugestões de que os arquivos de instalação feitos somente leitura podem causar isso, mas não consigo rastrear nenhum arquivo somente leitura em C: \ Users \ testuser.TESTDOMAIN \ AppData \ Local \ Apps \ 2.0