How to find the error when there is no error-information (problem hosting an ASP.Net MVC 3 App)

All we get when publishing our ASP.Net MVC 3 app is this:

You may also relive the error here.

There's no error message or anything. We've seen this once before, when the connection-string wa开发者_Go百科s invalid. This time however, we're sure that is not the problem.

How should we procceed to "debug" this app? It works fine on the dev server.

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I'm seeing the following error when I visit the link you provided:

Could not load file or assembly 'System.Web.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

This error indicates that you do not have MVC 3 installed on the target server and did not deploy the right set of binaries with your app. Read the following for more information: http://weblogs.asp.net/scottgu/archive/2011/01/18/running-an-asp-net-mvc-3-app-on-a-web-server-that-doesn-t-have-asp-net-mvc-3-installed.aspx

(Btw, is your app doing localization, different response encodign, etc? maybe that's why you are seeing these garbled responses).

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That is truly bizarre! If you have console access to the server, I would suggest logging in through Remote Desktop and executing the page there. You may get the "yellow screen of death", and be able to debug from there.