Unable to install WIndows client - file corrupted?

I am unable to install the windows client. the installation fails with the same error every time:


ERROR SUMMARY

Below is a summary of the errors, details of these errors are listed later in the log.

* Activation of install.panelsapp.io/PanelsDesktop.application resulted in exception. Following failure messages were detected:

+ Exception occurred loading manifest from file Xceed.Wpf.AvalonDock.Themes.Aero.dll: the manifest may not be valid or the file could not be opened.

+ File Xceed.Wpf.AvalonDock.Themes.Aero.dll is not a valid Portable Executable (PE) file.

+ File {0} is not a valid Portable Executable (PE) file.

…

ERROR DETAILS

Following errors were detected during this operation.

* [18/03/2019 17:39:12] System.Deployment.Application.InvalidDeploymentException (ManifestLoad)

- Exception occurred loading manifest from file Xceed.Wpf.AvalonDock.Themes.Aero.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.FileDownloader.OnModified()

at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)

at System.Deployment.Application.SystemNetDownloader.DownloadAllFiles()

at System.Deployment.Application.FileDownloader.Download(SubscriptionState subState, X509Certificate2 clientCertificate)

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, Uri& deploymentUri)

at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivationWithRetry(Uri activationUri, Boolean isShortcut, String textualSubId, String deploymentProviderUrlFromExtension, BrowserSettings browserSettings, String& errorPageUrl)

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivationWithRetry(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 Xceed.Wpf.AvalonDock.Themes.Aero.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.ComponentModel.Win32Exception

- File {0} is not a valid Portable Executable (PE) file.

- Source: System.Deployment

- Stack trace:

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)


Any ideas?