I went and brought i think all story based DLC for Mass Effect 3 (Leviathan, Omega, Citadel Part 1 & 2 and From Ashes) and i had already downloaded the Extended DLC which expands the ending.
After waiting for about an hour for Leviathan to download i decided to let the rest download in the background as i played the game, i did this with the Extended Ending DLC.
It took the rest of the night (from 7PM – 11:30PM) to download everything else, knowing that the DLC won't be working until i restarted the game i quit back to the x-box 360 dashboard and started the game back up, when i went into the menu 3 messages appeared
"Checking Downloadable Content" -> "Checking Save Data" -> "Checking Downloadable Content"
figuring it was because i had just downloaded about 6GB i thought id's wait, however after approx 1/2 an hour it was still sitting on the 3rd message, all i could do was attempt to connect to EA which i wasn't going to do as 1) i didn't have an account and 2) i saw no reason to since Leviathan worked fine (i could see the new mission in my journal).
I had to shut the system down, the next morning i checked the data on my harddrive and saw an file about the title cache and it being incomplete, i deleted this and all the new DLC and the game worked fine (the 3rd message only appears for less than a second), i re downloaded all the DLC this time via the X-Box like i did with Leviathan and wait till it was all done.
starting the game up again it did the same thing (3rd message remained), this time i waited 2 hours (10AM -> 12PM, 10AM was when i started watching Maria Watches Over Us and after that was finished i played Etrain Odyssey until it was lunch time at 12) and on occasion turning my controller back on, the 3rd message still remained.
I read that there was a problem with the Citadel DLC so i deleted the DLC again and re-downloaded just From Ashes being the smallest, at first it worked and i could access the menu again (3rd message was around for a second) however i wanted to make sure it would still work after i returned to the dashboard and went back into the game. when i did this the problem returned, i did the exact same with Omega, same problem as From Ashes (at first could access the menu but after restarting the game the 3rd message remained)
I have a Physical Copy of Mass Effect 3 (Omniblade Edition) and i installed both disks to cut down on load times, how can i get the DLC i spent $50 to work?
Best Answer
My experience with the games have been on the PC, but, you need an EA/Origins account confirmably from first hand experience, on PC, to properly download and use DLC since it is authenticated through the Cerberus Network equivalent. I think you should, if the above answer wasn't the solution, getting an EA Account. I forget if it allows you to link it to Xbox or Playstation accounts, but I seem to remember that being the case for Dead Space 2.