WB Vista and "Switcher!" problems

A program that I use called Switcher (http://insentient.net/) crashes when opening the Input... dialog.  Switching to Aero (and disabling WB) makes it open fine.  Here's the error dialog:

************** Exception Text **************
System.ArgumentException: Given combination of Class, Part, and State is not defined by the current visual style.
   at System.Windows.Forms.VisualStyles.VisualStyleRenderer..ctor(String className, Int32 part, Int32 state)
   at System.Windows.Forms.VisualStyles.VisualStyleRenderer..ctor(VisualStyleElement element)
   at Switcher.Input.SummaryListBox.GetItemBackgroundRenderer(DrawItemState state)
   at Switcher.Input.SummaryListBox.DrawItem(DrawItemState state, Graphics graphics, SummaryListItem item)
   at Switcher.Input.SummaryListBox.DrawListItem(Graphics graphics, Int32 index, Rectangle bounds)
   at Switcher.Input.SummaryListBox.RedrawListItem(Int32 index)
   at Switcher.Input.SummaryListBox.UpdateItem(SummaryListItem item, ItemUpdateType updateType)
   at Switcher.InputBindingsDialog.UpdateCommandItem(SummaryListItem commandItem)
   at Switcher.InputBindingsDialog.OnLoad(EventArgs e)
   at System.Windows.Forms.Form.OnCreateControl()
   at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
   at System.Windows.Forms.Control.CreateControl()
   at System.Windows.Forms.Control.WmShowWindow(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.ContainerControl.WndProc(Message& m)
   at System.Windows.Forms.Form.WmShowWindow(Message& m)
   at System.Windows.Forms.Form.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


************** Loaded Assemblies **************
mscorlib
    Assembly Version: 2.0.0.0
    Win32 Version: 2.0.50727.312 (rtmLHS.050727-3100)
    CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
Switcher