NullReferenceException
  Object reference not set to an instance of an object.

Source     : MicroFour License Base

Stack Trace:
   at MicroFour.Licensing.ActivationClient.GetActivatableItems(String Email, String Password, String Serial, String MacAddress, String ComputerName)
   at Activate.ActivateMain.GetActivatableItems()

What can I do to get my license activated?

TIA.