[SOLVED] NullReferenceException occurred in Caliburn.Micro.dll

NullReferenceException occurred in Caliburn.Micro.dll

I have a WPF Caliburn.Micro application. Here is a part of my code:

  protected override void OnViewLoaded( object view )
  {
     base.OnViewLoaded( view );

     var firstDataEntryVM = new FirstDataEntryViewModel();
     ActivateItem(firstDataEntryVM);

This causes

A first chance exception of type 'System.NullReferenceException' occurred in Caliburn.Micro.dll

Here is the call stack:

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I downloaded source code of Caliburn.Micro.WPF and added it to the solution. But now I cannot run the application at all:

enter image description here

How can I debug it?

Solution

A couple of ways come to mind:

Do you have the source code where the error is happening (I haven't looked to see if Caliburn is open source)?
Decompile the code and recompile it into a project using a decompiler such as Just Decompile.
Intellitrace can give you some additional information.

EDIT The source code for this project is available at CodePlex. Download the code and debug from Visual Studio!