I can't see the Design (window) in Sharp Develop, I get the following errors
System.NullReferenceException: Referencia a objeto no establecida como instancia de un objeto.
en ICSharpCode.FormsDesigner.Services.TypeResolutionService..ctor(String formSourceFileName)
en ICSharpCode.FormsDesigner.FormsDesignerViewContent.LoadDesigner()
en ICSharpCode.FormsDesigner.FormsDesignerViewContent.LoadAndDisplayDesigner()
en ICSharpCode.FormsDesigner.FormsDesignerViewContent.LoadInternal(OpenedFile file, Stream stream)
en ICSharpCode.SharpDevelop.Gui.AbstractViewContentHandlingLoadErrors.Load(OpenedFile file, Stream stream)
Solution, please, thank you