just downloaded the new API and assets. On from-scratch, only server files generation, the csProject file also seems to be looking for links to files that do not exist. I assume they are scripts shared by both the server and local side of the demo game. Also, I get a couple broken references more:
As you can see, Npgsql.pdb (which I've no idea what it is) and the base gameCore are both broken references. Leaving aside the pdb file, if the GameCore is broken many of us find it a bit harder to start working with the API. I suggest you amend this ASAP.
The "Run the server" section is completely outdated. References seem to be automatically linked now and things can get a bit confusing for newbies. Update required.
Just leaving this here my friends, have a look at it when you have the time