Cannot convert lambda expression to type 'string' because it is not a delegate type

Got this odd error and but not so meaningful.

Solution

Just include the Linq namespace that will fix the error.

using System.Linq;

The service cannot be activated because it does not support ASP.NET compatibility. ASP.NET compatibility is enabled for this application. Turn off ASP.NET compatibility mode in the web.config or add the AspNetCompatibilityRequirements attribute to the service type with RequirementsMode setting as ‘Allowed’ or ‘Required’

If you get this error when you try to run a WCF Rest Service, then add the following line above the class declaration

[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class Class1 : IService1
{
}

This is because ASP.NET Compatibility Mode implies request processing semantics that are fundamentally different from the WCF default, individual service implementations have the ability to control whether they run inside of an application for which ASP.NET Compatibility Mode has been enabled. Services can use the AspNetCompatibilityRequirementsAttribute to indicate whether they support ASP.NET Compatibility Mode