I have new issue.
I'm using local Map service and local Feature service (starting from two different mpk). It always starts without any problems unless I install ArcGis Runtime Toolkit (which I need to display legend in my app). When I install this toolkit through Manage NuGet Packages and start the app I'm getting the error: LocalServer start failed: executable not found (for both service). There is no error in the error list and not even warning.
Also when I uninstall that toolkit the services never start again so I have to create new project.
Does anyone know what to do?