ASP .NET 5 Empty Project returns 500 Internal Server Error - asp.net-core

Question

I've created a new Web Application, using the empty ASP .NET 5 preview template. The project builds after I run dnu restore.
When I run it, I get an empty response (i.e. blank page). Refreshing the page, I get a "HTTP Error 500.0 - Internal Server Error" typical page with no useful info (see screenshot below).
I'm using the standard boilerplate code from the project template:
public class Startup
{
// For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=398940
public void ConfigureServices(IServiceCollection services)
{
}
public void Configure(IApplicationBuilder app)
{
app.Run(async (context) =>
{
await context.Response.WriteAsync("Hello World!");
});
}
}
I noticed that if I set a breakpoint, it tells me the breakpoint won't be hit.
What am I doing wrong, and how can I get this simplest of scenarios working?
Edit: project.json is the default one that comes with the project template (uses beta 5, which I know is not the latest):
{
"webroot": "wwwroot",
"version": "1.0.0-*",
"dependencies": {
"Microsoft.AspNet.Server.IIS": "1.0.0-beta5",
"Microsoft.AspNet.Server.WebListener": "1.0.0-beta5"
},
"commands": {
"web": "Microsoft.AspNet.Hosting --config hosting.ini"
},
"frameworks": {
"dnx451": { },
"dnxcore50": { }
},
"publishExclude": [
"node_modules",
"bower_components",
"**.xproj",
"**.user",
"**.vspscc"
],
"exclude": [
"wwwroot",
"node_modules",
"bower_components"
]
}

Answer 1

It's just crazy what I had to go through to make this work. Summary:
Go to %userprofile%, delete everything in .dnx\packages (just to make sure there aren't conflicts between different beta runtime versions)
Make sure latest runtime is being used
dnu restore
Replace dependencies in project.json as per this answer
As per comment below that answer, replace "Microsoft.AspNet.Hosting --config hosting.ini" with "Microsoft.AspNet.Server.Kestrel"
In Startup.cs, replace using Microsoft.Framework.DependencyInjection; with using Microsoft.Extensions.DependencyInjection;
Run project with command line invoking dnx web, NOT from Visual Studio
Moral of the story: the "preview template" that comes with Visual Studio is WAY out of date, and you're better off starting a fresh project.
Note: at the time of writing, the latest runtime is 1.0.0-rc1-update1.