Gaming Red dead redemption undead nightmare DLC

[Virdoo]

Hi,

I've downloaded RDR Undead nightmare DLC for my ps3 which is modded. I have placed it as usual on my external HDD but for some strange reason I can't run the game. I can run regular RDR, but can not DLC.
What should I do about it? Should I maybe place files in same folder of regular RDR or?

I'm using webman and multiman

 

[pathway27]

Did the DLC come as a PKG or as a standalone game?

 

[rehevkor]

If I recall Undead Nightmare is standalone rather than traditional DLC. What format is the file?