read dead redemption undead nightmare problem

Hi, I just download read dead redemption undead nightmare (about 9-10gb) the game starts flawlessy but I can't enter/play the regular red redemption. as soon as i push SQUARE to select "single player mode" the game just starts in undead nightmare mode. How can I choose-select the regular one?
thanks for the support!
(I heard if it is version 1.06 an option would appear that'll let you choose.. But I just updated (don't remeber which version, but I guess it's the latest obviously) and nothing like that option showed up...)

i thinkkkk that it is only the undead nightmare. I was gonna download that my self but looked into it and im pretty sure that you cant play the original i may be wrong and i hope i am.

The Undead Nightmare game only has within it all the DLC packs that have been released to date and not the original full game. That means it has only the undead nightmare story and the full multiplayer with every DLC. You cant play the original story with undead nightmare. You would need to download the original Red Dead Redemption to play that.

Undead Nightmare only has undead nightmare.....

d'oh! Well..thx anyway for the support!

I'm going to try something to see if it really is only undead nightmare. I'm going to delete from the internal hd all the content of red dead redemption DLC folder, in which should be undead nightmare pack) and see if it start and what it say (don't think it'll work, but worth trying). I'l keep you guys posted.

RESULTS: everytime i try to start it it keeps install rdr's files and then goes back to xmb...so no such luck!