System.TypeLoadException: Could not load type 'XLabs.Forms.Controls.CheckBoxRenderer'
<p>I am trying to use XLabs.Forms.Controls.Checkbox in my Xamarin.Forms application and am running into the following error message:</p>

<p>System.TypeLoadException: Could not load type 'XLabs.Forms.Controls.CheckBoxRenderer' from assembly 'XLabs.Forms.Droid, Version=2.3.0.0, Culture=neutral, PublicKeyToken=null'.</p>

<p>I've tried reverting to the latest stable version (currently using the latest pre release).  I just can't seem to get beyond this one problem.  I have been able to use the control in other apps, so I don't think its an XLabs problem.  It seems that there is something wrong in my project but I cannot find it.  I have XLabs installed in both the PCL and the Droid projects.  </p>

<p>Any suggestions as to where to look?</p>

<p>Update:</p>

<p>I had taken a working Xamarin Forms app, removed the nuget packages, changed the target to get rid of Silverlight and then reinstalled the nuget packages.  Since then, I can't get XLabs to work.  Other packages are working.  I still have a backup copy of the app (pre-retargeting) and it works fine.</p>