"Could not load file or assembly..." DotNetOpenAuth + MVC3

Question

I'm getting the following error

    Could not load file or assembly 'file:///C:\Users\<project path>\bin\DotNetOpenAuth.dll'
    or one of it's dependencies. Operation is not supported. 
    (Exception from HRESULT: 0x80131515)

I get this when I try to add a Controller to my Controllers folder within the MVC3 framework.

I've only recently started using MVC3 and DotNetOpenAuth, I've been using a tutorial to try to learn it, the part I am replicating is this: http://www.asp.net/mvc/tutorials/getting-started-with-aspnet-mvc3/cs/adding-a-model

I can still run the project and everything works fine, I simply cannot add Controllers.

I'm using VS .NET 2010 (64 bit) on Windows 7.

Let me know if there's any additional information that is needed, thank you in advance!

Answer 1

It may be related to this: http://blogs.msdn.com/b/brada/archive/2009/12/11/visual-studio-project-sample-loading-error-assembly-could-not-be-loaded-and-will-be-ignored-could-not-load-file-or-assembly-or-one-of-its-dependencies-operation-is-not-supported-exception-from-hresult-0x80131515.aspx

Which says you need to unblock the assembly within windows explorer.