Collectible Card Game Headquarters

Describe the Bug:
When you try to activate the special card for Praetor's Grasp to play the exile with it card the game crashes reporting an odd error(modname:Unknown I don't think I have seen it before)

Which card did behave improperly ?
special card for Praetor's Grasp

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
ML3-JUNE\13.V2

What exactly should be the correct behavior/interaction ?


Are any other cards possibly affected by this bug ?

confirmed, in my case I do get this :

Fixed pending install (edit:installed); at least to the extent that any effect that lets you play an opponent's card can be (as opposed to copying it, which works fine).