Resolver not registered: react.asset.discussionTagsAsset
There might be something with the way you are creating a new project in Visual Studio, I suggest you download one of the samples and try running them.
If you still have trouble with NuGet, I suggest you post into to a relevant community on StackOverflow.
What is the type of the project that you are trying to add this to? Console app, WPF, WinForms?
Permission Problem You need the session.valid permission to do that.