I have a WinForms application with a rehosted workflow designer (WF4) and although my xamlx workflow opens in the designer without error, I find that when I drill down into the SendReceive activities I get a NullReferenceException as follows:
NullReferenceException: Object reference not set to an instance of an object, at
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)...
I'm running on Windows 7 x64.
Any help with this would be hugely appreciated.
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