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Exception adding ToggleSwitch to Grid in Blend4
If I try to create a ToggleSwitch in Blend4 using V1.1 by clicking on the control in the toolbar and then placing in in a container I'm getting an exception:
Argument Exception: 'Auto, 0, Auto, 0' is not a valid value for property Margin.
But pasting in a completely filled out ToggleSwitch from the sample application into my WPF app works fine.