Board Thread:Character Discussion/@comment-25355646-20150302022703/@comment-5106672-20151001172404

That's true, too. But we don't have any clue about which came first, the Curse or the magical vault. Diving head first into rampant speculation, he might have created the Curse before the vault, or the vault might have been less evil-proof than Bald Mountain, or whatever.

The one thing that's sure, though, is the writers should be more careful when they touch key plot-point, rewatch the past seasons every now and then and hint at a future explanation as they did in S1, instead of making up tings according to the plot's needs.