Erudio.Controller.Test.Controllers.ApplicationControllerTest.LifeCycleTest: System.ComponentModel.Composition.CompositionException : The composition produced a single composition error. The root cause is provided below. Review the CompositionException.Errors property for more detailed information. 1) No valid exports were found that match the constraint '((exportDefinition.ContractName == "Erudio.Controller.ViewModels.MainViewModel") AndAlso (exportDefinition.Metadata.ContainsKey("ExportTypeIdentity") AndAlso "Erudio.Controller.ViewModels.MainViewModel".Equals(exportDefinition.Metadata.get_Item("ExportTypeIdentity"))))', invalid exports may have been rejected. Resulting in: An exception occurred while trying to create an instance of type 'Erudio.Controller.ApplicationController'. Resulting in: Cannot activate part 'Erudio.Controller.ApplicationController'. Element: Erudio.Controller.ApplicationController --> Erudio.Controller.ApplicationController --> AssemblyCatalog (Assembly="Erudio.Controller, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null") Resulting in: Cannot get export 'Erudio.Controller.ApplicationController (ContractName="Erudio.Controller.ApplicationController")' from part 'Erudio.Controller.ApplicationController'. Element: Erudio.Controller.ApplicationController (ContractName="Erudio.Controller.ApplicationController") --> Erudio.Controller.ApplicationController --> AssemblyCatalog (Assembly="Erudio.Controller, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null")