If you get an error like this (or similar but with different class name) in Visual Studio 2008:
Cannot create an instance of the abstract class or interface 'ConsoleApplication1.Mappoint.FindServiceSoap'
The solution is pretty simple – once you realize what you’ve done wrong.
You most likely chose to “Add Service Reference“.
But that only works well with WCF services.
If you want to add a regular Web Service you need to click the “Advanced” button and then the “Add Web Reference” button.