This is a MixedRealityToolkit style repository for code bits and components that may not run directly on Microsoft HoloLens or immersive headsets but instead pair with them to build experiences.
Allright, so it's weird but simple:
In the directory where I stored the repository, I used an '&' in the name (Something like Unity&ARResources), and after renaming the folder to not contain the &, it worked.
In the MixedRemoteViewCompositor solution I can't load the component 'Shared'. WSA and Win32 are loaded.
I tried it using VS17 and VS15 and various SDKs, can't get it to load properly.