I downloaded the dlc from the marketplace but it didn't unlock anything for me. I still only have the maps, characters, and horde fortifications released at launch. Was there something special I was supposed to do before I downloaded it?

Bump.
Still haven't been able to find an answer anywhere.

do you have season pass ?

no i don't have it

when i first tried to download it, it said it was free but it wouldn't let me
i ended up downloading it a couple of hours after that for 800 microsoft points and then this happened

download it again

i figured it out.. thanks for the help though