map unavialble

Games Other Halo
1

Its me yet again with another question for the halo ninjas here.
PROBLEM

I completed the story mode on normal, then completed one episode on heroic with 3 skulls.

Now i want to start it on legendary,
when ever i attempt to start campaign it says, “map is not available”, also i can’'t see missions as well.

please help :slight_smile:

2

is your disc scratched?

3

not at all, the console and CD is just a month old since yesterday…