check your systems memory cause this is a very uncommon bug!

There's nothing on my system's memory. I've downloaded maybe two games. I'm going to have to mail it back and get a new copy; which will hopefully work!

i had this problem (or a similar one) i unlocked kahn and it would not register that i had unlocked him i replayed story mode again and again and it worked finally

Is there a difficulty setting requirement? I beat the game on easy both times and the Endings did not register. Do I have to beat it on a higher setting?

This is so frustrating!! I love this game but I don't want to play it any further if I'm going to have to swap it for a different version and start all over again.

when i first turned on my game it couldn't register my memory card for the 360 so i just kept re checking it until it did.

your system memory unit probably just isn't getting read so when you play the game nothing saves at all.

Any chance you have to beat storymode with both casts before it will retain anything?

Check the midway forums it is a bug ....

I have beaten both of the story modes and I have Kahn and Darkseid saved already. Neither one proved to be an issue.

How do I reset my memory card? I'll give that a try.

i beat story mode wit MK side 1st nd once i was done i didnt get my trophy WTF!!! so i beat the DC side nd i got the trophy for that nd the trophy for beating both stories but i ent nd beat the MK side again nd still didnt get it can anybody help?