Cannot download the application

Hey there,

when I open my cTrader , Im getting this message :'Cannot download the application. The application is missing required files'.

If I click on the details , I get these infos :

"

PLATFORM VERSION INFO
    Windows             : 6.1.7601.65536 (Win32NT)
    Common Language Runtime     : 4.0.30319.18063
    System.Deployment.dll         : 4.0.30319.17929 built by: FX45RTMREL
    clr.dll             : 4.0.30319.18063 built by: FX45RTMGDR
    dfdll.dll             : 4.0.30319.17929 built by: FX45RTMREL
    dfshim.dll             : 4.0.41209.0 (Main.041209-0000)

SOURCES
    Deployment url            : file:///C:/Users/User/AppData/Roaming/Microsoft/Internet%20Explorer/Quick%20Launch/User%20Pinned/TaskBar/FxPro%20cTrader.appref-ms%7C
                        Server        : nginx
    Deployment Provider url        : http://fxpro.ctrader.com/xTrader.application

ERROR SUMMARY
    Below is a summary of the errors, details of these errors are listed later in the log.
    * Activation of C:\Users\User\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\FxPro cTrader.appref-ms| resulted in exception. Following failure messages were detected:
        + Downloading http://fxpro.ctrader.com/cTrader AppFiles/2.1.65534.35202/xTrader.exe.manifest did not succeed.
        + The remote server returned an error: (404) Not Found.

COMPONENT STORE TRANSACTION FAILURE SUMMARY
    No transaction error was detected.

WARNINGS
    There were no warnings during this operation.

OPERATION PROGRESS STATUS
    * [25/09/2017 09:42:44 ص] : Activation of C:\Users\User\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\FxPro cTrader.appref-ms| has started.
    * [25/09/2017 09:42:44 ص] : Performing necessary update check as specified by the deployment.
    * [25/09/2017 09:42:44 ص] : Consuming new update.
    * [25/09/2017 09:42:44 ص] : Installation of the application has started.

ERROR DETAILS
    Following errors were detected during this operation.
    * [25/09/2017 09:42:44 ص] System.Deployment.Application.DeploymentDownloadException (Unknown subtype)
        - Downloading http://fxpro.ctrader.com/cTrader AppFiles/2.1.65534.35202/xTrader.exe.manifest did not succeed.
        - Source: System.Deployment
        - Stack trace:
            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.DownloadManifestAsRawFile(Uri& sourceUri, String targetPath, IDownloadNotification notification, DownloadOptions options, ServerInformation& serverInformation)
            at System.Deployment.Application.DownloadManager.DownloadApplicationManifest(AssemblyManifest deploymentManifest, String targetDir, Uri deploymentUri, IDownloadNotification notification, DownloadOptions options, Uri& appSourceUri, String& appManifestPath)
            at System.Deployment.Application.DownloadManager.DownloadApplicationManifest(AssemblyManifest deploymentManifest, String targetDir, Uri deploymentUri, Uri& appSourceUri, String& appManifestPath)
            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.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)
        --- Inner Exception ---
        System.Net.WebException
        - The remote server returned an error: (404) Not Found.
        - Source: System
        - Stack trace:
            at System.Net.HttpWebRequest.GetResponse()
            at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)

COMPONENT STORE TRANSACTION DETAILS
    No transaction information is available.

"

How can I fix this problem?

Thanks in advance.