Hi,

In our application we use the XamDockManager with several ContentPanes. Upon loading and before interacting with the mouse. Whenever I press the CTRL-TAB buttons to bring up the PaneNavigator I get the following error:

System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=SelectedPane; DataItem=null; target element is 'VisualBrush' (HashCode=60503953); target property is 'Visual' (type 'Visual')'

I assumed it was in the panenavigator but I when I have tested commenting out the following in the PaneNavigator style:

<Rectangle Width="{Binding Path=SelectedPane.ActualWidth, RelativeSource={x:Static RelativeSource.TemplatedParent}}"
Height="{Binding Path=SelectedPane.ActualHeight, RelativeSource={x:Static RelativeSource.TemplatedParent}}">
<Rectangle.Fill>
<VisualBrush AlignmentX="Left"
AlignmentY="Top"
AutoLayoutContent="False"
Stretch="None"
Visual="{Binding Path=SelectedPane, RelativeSource={x:Static RelativeSource.TemplatedParent}}" />
</Rectangle.Fill>
</Rectangle>

I still get the same error referencing a visual brush - perhaps it is buried in another style? If I start the application and start clicking around in it, it works. I've tried setting focus to a contentpane upon loading to see if that would resolve the problem but it hasn't.

Any insight you can provide would be great.