title: "Value cannot be null. Parameter name: instance" error when trying to open telerik report
body: <p>In my solution I have telerik reports and when trying to open them in Visual Studio 2010 designer, I am getting this error:</p>
  
  <pre><code>Value cannot be null. Parameter name: instance
  
  Call Stack 
  
  at System.ComponentModel.TypeDescriptor.AddAttributes(Object instance, Attribute[] attributes)
  at Microsoft.VisualStudio.Design.VSDesignSurface.CreateDesigner(IComponent component, Boolean rootDesigner)
  at System.ComponentModel.Design.DesignerHost.AddToContainerPostProcess(IComponent component, String name, IContainer containerToAddTo)
  at System.ComponentModel.Design.DesignerHost.PerformAdd(IComponent component, String name)
  at System.ComponentModel.Design.DesignerHost.System.ComponentModel.Design.IDesignerHost.CreateComponent(Type componentType, String name)
  at System.ComponentModel.Design.Serialization.DesignerSerializationManager.CreateInstance(Type type, ICollection arguments, String name, Boolean addToContainer)
  at System.ComponentModel.Design.Serialization.DesignerSerializationManager.System.ComponentModel.Design.Serialization.IDesignerSerializationManager.CreateInstance(Type type, ICollection arguments, String name, Boolean addToContainer)
  at System.ComponentModel.Design.Serialization.TypeCodeDomSerializer.Deserialize(IDesignerSerializationManager manager, CodeTypeDeclaration declaration)
  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)  
  </code></pre>
  
  <p>When I run the solution, they are appearing and they are good. So, the only problem is the designer and this error.</p>
  
  <p>Thanks in advance.</p>