I keep getting this error , Application cannot be started Please contact application vendor.
I`ve tried everything to try to fix this :( , Anyone know why im getting this ?

PLATFORM VERSION INFO
    Windows             : 6.1.7601.65536 (Win32NT)
    Common Language Runtime     : 4.0.30319.18444
    System.Deployment.dll         : 4.0.30319.18408 built by: FX451RTMGREL
    clr.dll             : 4.0.30319.18444 built by: FX451RTMGDR
    dfdll.dll             : 4.0.30319.18408 built by: FX451RTMGREL
    dfshim.dll             : 4.0.41209.0 (Main.041209-0000)

SOURCES
    Deployment url            : file:///C:/Users/Usuario/Desktop/KongHackTrainer%20.application
    Deployment Provider url        : http://trainer.konghack.com/KongHackTrainer.application
                        Server        : Apache/2.4.10 (Unix) OpenSSL/1.0.1e-fips mod_bwlimited/1.4
    Application url            : http://trainer.konghack.com/Application%20Files/KongHackTrainer_0_1_0_27/KongHackTrainer.exe.manifest
                        Server        : Apache/2.4.10 (Unix) OpenSSL/1.0.1e-fips mod_bwlimited/1.4

IDENTITIES
    Deployment Identity        : KongHackTrainer.application, Version=0.1.0.27, Culture=en-US, PublicKeyToken=3d34636251264ac6, processorArchitecture=x86
    Application Identity        : KongHackTrainer.exe, Version=0.1.0.27, Culture=en-US, PublicKeyToken=3d34636251264ac6, 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 C:\Users\Usuario\Desktop\KongHackTrainer .application resulted in exception. Following failure messages were detected:
        + Activation failed.
        + El sistema no puede encontrar el archivo especificado. (Exception from HRESULT: 0x80070002)

COMPONENT STORE TRANSACTION FAILURE SUMMARY
    No transaction error was detected.

WARNINGS
    There were no warnings during this operation.

OPERATION PROGRESS STATUS
    * [9/5/2014 10:42:55 AM] : Activation of C:\Users\Usuario\Desktop\KongHackTrainer .application has started.
    * [9/5/2014 10:43:06 AM] : Processing of deployment manifest has successfully completed.
    * [9/5/2014 10:43:06 AM] : Installation of the application has started.
    * [9/5/2014 10:43:07 AM] : Processing of application manifest has successfully completed.
    * [9/5/2014 10:43:07 AM] : Found compatible runtime version 4.0.30319.
    * [9/5/2014 10:43:07 AM] : Request of trust and detection of platform is complete.
    * [9/5/2014 10:43:07 AM] : Commit of the downloaded application has started.
    * [9/5/2014 10:43:07 AM] : Installation of application has successfully completed.

ERROR DETAILS
    Following errors were detected during this operation.
    * [9/5/2014 10:43:07 AM] 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.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
        - El sistema no puede encontrar el archivo especificado. (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)

COMPONENT STORE TRANSACTION DETAILS
    * Transaction at [9/5/2014 10:43:07 AM]
        + System.Deployment.Internal.Isolation.StoreOperationStageComponent
            - Status: Installed
            - HRESULT: 0x0
            - Manifest: V3DW5G1H.RND.application
        + System.Deployment.Internal.Isolation.StoreOperationSetDeploymentMetadata
            - Status: Set
            - HRESULT: 0x0
        + System.Deployment.Internal.Isolation.StoreOperationSetDeploymentMetadata
            - Status: Set
            - HRESULT: 0x0
        + System.Deployment.Internal.Isolation.StoreTransactionOperationType (27)
            - HRESULT: 0x0

try opening one of these in windows explorer  and delete everything inside
%LocalAppData%\Appsor        %userprofile%\Local Settings\Apps

couldn't figure out what to delete or where lol (Yes, my knowledge is horrible these days of systems)

Uninstall and reinstall worked fine though. So for thoe, like me struggling to get it working.. that wortks :D