User blog:Sammyrock0087/Undead Nightmare broken???

Hey,

So I have Red Dead Redemption & Red Dead Redemption: Undead Nightmare on PS3, both digital copies, and I've 100%'d both the regular game and the Undead expansion. I had a break for a few months whilst playing other games, and I've just come back to it and every time I load up Undead Nightmare, it freezes. The regular game works fine online and offline, but no matter how many times I try to play Undead Nightmare, it loads me up at El Presidio (where I last saved), then a few seconds later it says 'Ratskeller Fork has come under attack from the Undead hordes' and then it freezes. Is this happening to anyone else? And why is it happening?

Thanks,

Sam.