8 of 8 people found the following review helpful
A Helpful Hint,
This review is from: Oblivion: The Shivering Isles Expansion Pack (Xbox 360) (Video Game)
I had exactly the same problem, It depends how old your console and oblivion game disc are. Unfortunately, if you have an older copy/console the only way around it is to hook up your console to xbox live and insert the oblivion disc. Your console will then automatically apply the updates needed to activate the content. My copy now works perfectly. You do not need to have the console connected to xbox live permanently, only long enough to apply the required updates,so perhaps a mates connection could be utilised if you are not online yourself.