I added Xceed Extended WPF Toolkit via Nuget and I get a "A first chance exception of type 'System.IO.FileNotFoundException' occurred in mscorlib.dll" which when I looked into it, found that it was looking for Xceed.Wpf.Toolkit.Luna.
Everything seems to work without this assembly.
Comments: ** Comment from web user: cjb110 **
Everything seems to work without this assembly.
Comments: ** Comment from web user: cjb110 **
The attached project does it.
I started Visual Studio 2010 SP1 (on XP SP3), created new WPF Application. Went to Nuget and searched for Xceed, and downloaded the latest stable (1.9) release.
I was only using the Integer spinners so I copied that xaml from my original project.
When it loads, you get the First Chance exception (I noticed there's a slight delay, i.e. its not reported straight away).
Hope that helps!