Forum:Finished walkthru1 - can't see Island of DrNed or Secret armory! Help.

So I've finished the whole game and all missions (includign side missions) on walkthru 1 and have downloaded bpth Island of Dr Ned and the Secret Armory but I can see no way of accessign either add on from within the game! Have tried the fast travel and most major NPCs.

Please help!!

(Playing on Xbox 360).