I was trying to edit one of my decks but after taking out one of the 30 runes, I have been unable to add another to replace it. It keeps saying that there are 30 active runes in the deck when in fact there are only 29. Indeed, only 29 runes are visible - both in Rune Manager and in the client itself (which doesn't recognise it as a complete deck). I've tried adding and removing runes but that didn't work. I've also tried copying the deck but the copy had the exact same error.