Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - General Check your Accounts if you purchased the CE.

I don't think that's your CE key. Remember the email regarding the removal of the dice from the CE package?

"As a small token of our thanks for your pre-order and by way of apology, we offer a free Steam Early Access version of Divinity: Original Sin to all of our customers who pre-purchased the Collector's Edition.

You will find the Steam key listed under your purchases on the Larian Vault. You will be able to use this key regardless of whether you cancel your order. It will remain active until the game releases."