Hi all,
I'm working with a new WPF project in .NET 4.0 using the Expression 4 beta, but when opening up a project that originated in the VS designer Expression is throwing all sorts of exceptions. It seems to happen as a reaction to a variety of different actions--selecting a control, moving a control, basically any manipulation of the design surface. They're all the same:
ArgumentNullException: Value cannot be null.
Parameter Name: ItemToSelect
I tried a fair amount of google-fu to figure out what was going on before I posted here, but it doesn't even seem as if itemToSelect is anywhere to be found. I don't suppose anyone here knows why this would be happening?