I was in the Collection view and dragged the Notes column up to have it group on it.
I received:
13:47:43,873 X [T9940] Exception: EAccessViolation in [cxGridCustomView.TcxGridSite] Address: $D38293 Access violation at address 00A8C8CC in module 'mtgstudio.exe' Read of address 0000000008 Help Context: 0