[HoloLens] Trying to create a basic app

Hey,
I wanted to create a simple HoloLens app with Unity, VS17 and HoloLens Emulator and tried following the Microsoft Academy Tutorials.
At first I was using Unity 2017.2.0b7 and VS 2017 Enterprise, I created a simple App showing a cube and exported it to VS where I ran the emulator. But when the app started it immediately closed and I was left staring at a black screen.
Then I saw this thread https://forum.unity3d.com/threads/hololens-cant-launch-unity-very-basic-app.488630/ and downloaded Unity 2017.2.0b6 as mentioned. But now I'm getting this:

Code (csharp):

1.  
2. NuGet-Pakete werden wiederhergestellt...
3. Wenn Sie verhindern möchten, dass NuGet Pakete während des Builds wiederhergestellt werden, öffnen Sie das Dialogfeld "Optionen" in Visual Studio, klicken Sie auf den Knoten "Paket-Manager", und deaktivieren Sie dann "NuGet das Herunterladen fehlender Pakete während des Builds erlauben".
4. 1>------ Erstellen gestartet: Projekt: VR4, Konfiguration: Release x86 ------
5. 1>  VR4 -> C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\bin\x86\Release\VR4.exe
6. 1>  UnityWSAPlayerDir "C:\Program Files\Unity 2017.2.0b6\Editor\Data\PlaybackEngines\MetroSupport\".
7. 1>  UnityProjectDir "C:\Users\Fabian\Desktop\HoloLens\VR4\".
8. 1>  Copying unprocessed assemblies...
9. 1>  Running AssemblyConverter...
10. 1>  System.Collections.Generic.KeyNotFoundException: Der angegebene Schlüssel war nicht im Wörterbuch angegeben.
11. 1>     bei System.Collections.Generic.Dictionary`2.get_Item(TKey key)
12. 1>     bei UnityEditor.Scripting.Compilers.NuGetPackageResolver.Resolve()
13. 1>     bei Unity.UWPAssemblyResolver..ctor(String projectLockFile, String desiredUWPSDKVersion)
14. 1>     bei Unity.OperationContext.SetPlatform(Platform platform, String projectLockFile, String uwpSDK)
15. 1>     bei Unity.ParseArgsStep.Execute()
16. 1>     bei Unity.Step.Execute(OperationContext operationContext, IStepContext previousStepContext)
17. 1>     bei Unity.Operation.Execute()
18. 1>     bei Unity.Program.Main(String[] args)
19. 1>C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\VR4.csproj(391,9): error MSB3073: Der Befehl ""C:\Users\Fabian\Desktop\HoloLens\VR4\App\Unity\Tools\AssemblyConverter.exe" -platform=uap -lock="C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\project.lock.json" -bits=32 -configuration=Release -removeDebuggableAttribute=False -uwpsdk=10.0.15063.0 -path="." -path="C:\Program Files\Unity 2017.2.0b6\Editor\Data\PlaybackEngines\MetroSupport\Players\UAP\dotnet\x86\Release" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.TilemapModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.UNETModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.UIModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.UIElementsModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.StyleSheetsModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.SpriteMaskModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.ScreenCaptureModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.TextRenderingModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.TerrainPhysicsModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.TerrainModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.VRModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.VideoModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.VehiclesModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.WindModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.WebModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.UnityWebRequestAudioModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.UnityConnectModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.UnityAnalyticsModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.UnityWebRequestWWWModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.UnityWebRequestTextureModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.UnityWebRequestModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.PhysicsModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.CoreModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.ClothModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.AudioModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.DirectorModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.CrashReportingModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.AIModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.AccessibilityModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.ARModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.AnimationModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.ParticlesLegacyModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.JSONSerializeModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.Physics2DModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.PerformanceReportingModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.ParticleSystemModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.GridModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.GameCenterModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.InputModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.IMGUIModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.ImageConversionModule.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.Timeline.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\nunit.framework.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.UI.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.AR.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.HoloLens.dll" "C:\Users\Fabian\Desktop\HoloLens\VR4\App\VR4\UnityEngine.Networking.dll"" wurde mit dem Code 1 beendet.
20. ========== Erstellen: 0 erfolgreich, 1 fehlerhaft, 0 aktuell, 0 übersprungen ==========
21. ========== Bereitstellen: 0 erfolgreich, 0 fehlerhaft, 0 übersprungen ==========
22.  

I created a completely fresh Unity project. Is my problem correlated to this? https://forum.unity3d.com/threads/unable-to-build-even-an-empty-project.488278/
What can I do? Would a downgrade to VS2015 help?

Cheers

 

my personal experience : I have had multiple problems with unity 2017 both 1 and 2
I am now using 5.6.0. and it works well so far