David Anson has made a quick fix for the unofficial build of the Silverlight Charting assembly for WPF.
When I updated my ChartBuilder sample/application/learning tool for the March 09 release of the Silverlight Toolkit a few weeks ago, I included an unofficial build of the Silverlight Charting assembly for WPF. Despite my warning that WPF Charting was completely untested, I nevertheless hoped that some of you would give WPF Charting a try - and you didn't let me down. :) Two significant WPF-only issues came up pretty quickly, and I responded by fixing them and publishing an updated build of the WPF Charting assembly - along with sharing the files and steps for anyone to build the WPF Charting assembly themselves!