title: wpf window entirely black
body: <p>I sell a WPF application, on one customer machine (out of several hundreds) the entire application window is black, anyone know what's going on?</p>
  
  <p>The machine is running Windows XP with .net 3.5SP1, the graphic adapter is GeForce 6200 with two monitors (disabling one monitor doesn't solve the problem).</p>
  
  <p>Setting "Compatibility settings" to "256 colors" solves the problem (but it's not a viable solution, I need more colors for the app to look good).</p>
  
  <p>The application is yaTimer ( <a href="http://www.nbdtech.com/yaTimer/" rel="noreferrer">http://www.nbdtech.com/yaTimer/</a> ), it has custom window chrome based on the techniques described in this post <a href="http://blogs.msdn.com/wpfsdk/archive/2008/09/08/custom-window-chrome-in-wpf.aspx" rel="noreferrer">http://blogs.msdn.com/wpfsdk/archive/2008/09/08/custom-window-chrome-in-wpf.aspx</a> in the "Office 2007 without Aero" section.</p>
  
  <p>If anyone can give me a clue as to what's going on I'll be very thankful.</p>
  
  <p>Thanks.</p>