Hi Telerik Team,
We have implemented data Virtualization on RadGridView using MVVM with inline edits same as your demo:http://demos.telerik.com/silverlight/#DataVirtualization/FirstLook.
when we edit a value and scroll down, we are getting an exception "Cannot change ObservableCollection during a CollectionChanged or PropertyChanged event."
same happening at you demo page. I have attached the screen shot.
please help us in fixing this issue ASAP.