I was writing a Windows Azure ASP.NET MVC application and when making a call to a page I received the following exception:
System.Security.SecurityException: That assembly does not allow partially trusted callers
In my application I'm using Castle Windsor for dependency injection and when trying to resolve a service using:
IGravatar gravatar = MvcApplication.Container.Resolve<IGravatar>();
I received this message. To solve things I needed to update the WebRole element in the ServiceDefinitions.csdef file so that enableNativeCodeExecution is enabled.
<WebRole name="TwitterGravatarMVC" enableNativeCodeExecution="true">