Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - Latest News Kickstarter reward or version issues? Inhere!

i bought DIVINITY: ORIGINAL SIN from a neighbor today and tried to install it on my pc. when it asked for the activation code i typed in the code that came with the game and i got this message: DUPLICATE CODE CONTACT GAME SUPPORT. how can i install the game without the activation code or where can i get a new code??