Are you getting a "The root activity type is invalid" error with the Custom Activity Designer sample?

Several peolple have gotten a “The root activity type is invalid” error when using the Custom Activity Designer sample that can be found at  I created an update project that should resolve the problem, which can be downloaded from the link below.


State machine workflow web service example

Being able to have a StateMachineWorkflow hold state across multiple different web service calls can be very useful.  This example will show you how to get start.  The first step is to create your interface.  For this example I will be using the following:   public interface IOrderService {     string CreateOrder(string id);     string…