I just upgraded my project to version 3.0 of the Extended WPF Toolkit™ Community Edition and now my DataGrid shows an error at design time saying:
The specified view type must derive from ViewBase. Parameter name: TargetViewType
Is this a new bug in the new version?
I had to add PresentationFramework.Luna (Microsoft DLL).
I'm guessing it was probably there before the update but I had to re-add it. Also had to set it to copy local which shouldn't be necessary but right now I didn't have time to find an alternative way to locate the dll.