A startup form has not been specified
Updated: July 20, 2015
For the latest documentation on Visual Studio 2017 RC, see Visual Studio 2017 RC Documentation.
The application uses the WindowsFormsApplicationBase class but does not specify the startup form.
This can occur if the Enable application framework check box is selected in the project designer but the Startup form is not specified. For more information, see Application Page, Project Designer (Visual Basic).
Specify a startup object for the application.
For more information, see Application Page, Project Designer (Visual Basic).