ASP.NET MVC Method not found: 'System.Version System.Web.HttpRuntime.get_IISVersion()'

Question

I have an MVC site using Entity Framework 5.0 running on an IIS 7.5 web server. The site works well on my local machine, but when I upload it to the webserver I get the error:

Method not found: 'System.Version System.Web.HttpRuntime.get_IISVersion()'.

The site is running on its own integrated pipeline and I have other MVC sites running on the server without a problem.

Any ideas?

Answer 1

This was fixed with a reinstall of the asp.net 4.5 framework.