There is a bug in the code when you run the Application Block Software Factory: Create Design-Time Base Provider Node.
After you run that step and build the code, you will see 3 compile-time errors occuring when iterating providers in the ApplicationBlockSettingsNodeBuilder.
I fixed the problem manually, but wanted to mention the error.
Also, as an FYI, the ApplicationBlockSettings, ApplicationBlockSettingsNodeBuilder, etc. classes should be renamed to
ProviderBaseSettings, etc. I believe.
Microsoft MVP C#