title: The designer could not be shown for this file because none of the classes within it can be designed. Visual C#
body: <p>Trying to create a new windows form application and I keep getting this problem </p>
  
  <p>at </p>
  
  <blockquote>
    <p>System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.EnsureDocument(IDesignerSerializationManager
    manager) at
    System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager
    manager) at
    Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager
    serializationManager) at
    Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.DeferredLoadHandler.Microsoft.VisualStudio.TextManager.Interop.IVsTextBufferDataEvents.OnLoadCompleted(Int32
    fReload)</p>
  </blockquote>
  
  <p>Any ideas on what the problem could be?</p>