Using asp.net core 2.0 with Visual Studio Community 2017 for Mac
Created a brand new asp.net core web app project using the provided template
Click run project
Project builds successfully
Browser opens and shows message: Safari Cannot Open The Page - Safari cannot open the page localhost:5001 because the server unexpectedly dropped the connection
In Visual Studio Community IDE the Program.cs file loads with BuildWebHost(args).Run(); highlighted
Click continue button in IDE brings up a Program Report for dot net - dot net quit unexpectedly
Note that the asp.net core empty template runs without an issue