Still doesn't work. Below are the error details. Have fun sorting through them!
PLATFORM VERSION INFO
    Windows             : 6.1.7600.0 (Win32NT)
    Common Language Runtime     : 4.0.30319.239
    System.Deployment.dll         : 4.0.30319.1 (RTMRel.030319-0100)
    clr.dll             : 4.0.30319.239 (RTMGDR.030319-2300)
    dfdll.dll             : 4.0.30319.1 (RTMRel.030319-0100)
    dfshim.dll             : 4.0.31106.0 (Main.031106-0000)
SOURCES
    Deployment url            : http://www.methodintegration.com/MethodIntegrationEngineV2/MethodIntegrationQB.application
                        Server        : Microsoft-IIS/7.0
                        X-Powered-By    : ASP.NET
    Deployment Provider url        : http://www.methodintegration.com/MethodIntegrationEngineV2/MethodIntegrationQB.application
    Application url            : http://www.methodintegration.com/MethodIntegrationEngineV2/Application%20Files/MethodIntegrationQB_1_0_0_198/MethodIntegrationQB.exe.manifest
                        Server        : Microsoft-IIS/7.0
                        X-Powered-By    : ASP.NET
IDENTITIES
    Deployment Identity        : MethodIntegrationQB.application, Version=1.0.0.198, Culture=neutral, PublicKeyToken=3f13b69ae9c3b54e, processorArchitecture=x86
    Application Identity        : MethodIntegrationQB.exe, Version=1.0.0.198, Culture=neutral, PublicKeyToken=3f13b69ae9c3b54e, 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 http://www.methodintegration.com/MethodIntegrationEngineV2/MethodIntegrationQB.application resulted in exception. Following failure messages were detected:
        + Exception occurred loading manifest from file DevExpress.XtraEditors.v7.3.dll: the manifest may not be valid or the file could not be opened. 
        + File DevExpress.XtraEditors.v7.3.dll is not a valid Portable Executable (PE) file.
        + PE file does not have enough data.
COMPONENT STORE TRANSACTION FAILURE SUMMARY
    No transaction error was detected.
WARNINGS
    There were no warnings during this operation.
OPERATION PROGRESS STATUS
    * [12/27/2011 2:14:58 PM] : Activation of http://www.methodintegration.com/MethodIntegrationEngineV2/MethodIntegrationQB.application has started.
    * [12/27/2011 2:15:03 PM] : Processing of deployment manifest has successfully completed.
    * [12/27/2011 2:15:03 PM] : Installation of the application has started.
    * [12/27/2011 2:15:03 PM] : Processing of application manifest has successfully completed.
    * [12/27/2011 2:15:08 PM] : Found compatible runtime version 2.0.50727.
    * [12/27/2011 2:15:08 PM] : Detecting dependent assembly Sentinel.v3.5Client, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=msil using Sentinel.v3.5Client, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=msil.
    * [12/27/2011 2:15:08 PM] : Detecting dependent assembly System.Data.Entity, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=msil using System.Data.Entity, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=msil.
    * [12/27/2011 2:15:08 PM] : Request of trust and detection of platform is complete.
ERROR DETAILS
    Following errors were detected during this operation.
    * [12/27/2011 2:15:34 PM] System.Deployment.Application.InvalidDeploymentException (ManifestLoad)
        - Exception occurred loading manifest from file DevExpress.XtraEditors.v7.3.dll: the manifest may not be valid or the file could not be opened. 
        - Source: System.Deployment
        - Stack trace:
            at System.Deployment.Application.Manifest.AssemblyManifest.ManifestLoadExceptionHelper(Exception exception, String filePath)
            at System.Deployment.Application.Manifest.AssemblyManifest.LoadFromInternalManifestFile(String filePath)
            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, BrowserSettings browserSettings, String& errorPageUrl)
            at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state)
        --- Inner Exception ---
        System.IO.IOException
        - File DevExpress.XtraEditors.v7.3.dll is not a valid Portable Executable (PE) file.
        - Source: System.Deployment
        - Stack trace:
            at System.Deployment.Application.PEStream.ConstructFromFile(String filePath, Boolean partialConstruct)
            at System.Deployment.Application.Manifest.AssemblyManifest.LoadFromInternalManifestFile(String filePath)
        --- Inner Exception ---
        System.IO.IOException
        - PE file does not have enough data.
        - Source: System.Deployment
        - Stack trace:
            at System.Deployment.Application.PEStream.PEComponent.ReadData(FileStream file, Int64 position, Type dataType)
            at System.Deployment.Application.PEStream.DosHeader..ctor(FileStream file)
            at System.Deployment.Application.PEStream.ConstructPEImage(FileStream file, Boolean partialConstruct)
            at System.Deployment.Application.PEStream.ConstructFromFile(String filePath, Boolean partialConstruct)
COMPONENT STORE TRANSACTION DETAILS
    No transaction information is available.