Wont let me download my pre-order

I pre-ordered T.I.'s new CD and when I tried clicking on Check For Purchases, it says "All purchases have been downloaded for this account", and when I try checking my account, it tells me "You have one or more pre-orders available", so I click ok, and it tells me "Purchase of this item is not currently available, this item is being modified. Please try again later." Is there any way I can fix this? Or, is there another way I could download it? When I pre-ordered this I had the intention of being able to download it the day it came out, and if not, thats the last thing I'm buying from itunes.