Darksiders II Argul's Tomb DLC

Before adding dlc, make a folder entitled 54510896 and place the 0000002 folder in it. Then place the 54510896 folder in Hdd1, Content, then 00000000 ( I forgot to add the games directory folder).
When you load up your save, at the main menu go to Downloadable Content. Go to Choose Campaign, and select Argul's Tomb.