Games on demand spartacus legends disk read error

[Tyler Holman]

I just started the game last night and so far every aspect of the game seems to b working fine. Except for when I choose to at the mission where u fight ashur in the first stage, everytime I choose the mission the game messes up and gives the disk read error but it doesn't do that at any other part. Has anyone headed anything that may be helpful in solving this issue since I've watched all of the tv series and I was looking forward to destroying Ashur any help is appreciated