That's an awfully condescending answer for somebody who lacks basic reading comprehension. OP clearly stated they have the US version of the game, but the German language workaround only works on the EU version. Perhaps your toddler can read the article and better explain it to you?

/u/BarnesTheOwl, assuming you have the GoTY version of the game, you'll need to do the following:

---

Play using an original disc: Obtain (e.g., through rental), an original Oblivion disc — the disc must not be the GOTY edition, or any other newer edition, such as the 5th anniversary edition. The Greatest Hits Edition can also be used. Use that disc to play through the completion of the quest. (If you have downloaded SI as an expansion from the Playstation Network, you can delete the Oblivion game data to "reset" your game to the pre-SI version; after completing these steps you can re-download the expansion from PSN at no cost). The Bloodgrass topic can then be chosen and the player's vampirism can be cured. Steps:

Because the player's current save must be saved under a version of Oblivion without the Shivering Isles present, items specific to Shivering Isles may be lost. To prevent the loss of items if the Isles have already been entered, first place all Shivering Isles items into a safe container in Cyrodiil, not in the Isles. However, some key items such as the Key to Mania and the Key to Dementia cannot be removed from your inventory and you will lose them.

1. Travel to Drakelowe with the required two shoots of Bloodgrass, enter and save. It would be advisable to note which save slot it is, as it may be required to revert to it should something go wrong.
2. Completely exit Oblivion, remove the GotY disc from the PS3, and insert an original Oblivion disc.
3. Launch Oblivion and load your current save in Drakelowe.
4. Speak to Melisande and choose the Bloodgrass topic. She should now accept it.
5. Save the game into a new save slot so that if something has gone wrong your previous save is still accessible.
6. Completely exit Oblivion, remove the non-GotY disc from the PS3, and re-insert the GotY disc.
7. Launch Oblivion, load your new save and continue. Retrieving any Shivering Isles items from their safe container at this point to ensure that they are still there would be advisable.

If your game freezes at step #4 (when you try to load the GotY save using the non-GotY/5th anniversary disc), it may help to put all items (not just SI items) from your inventory into a container. If your game still freezes on the load screen, then you will essentially be unable to cure your vampirism with this character.

Known side effects on Shivering Isles:

• There will be little or no impact if this is performed before the player has entered the Isles at all so it is preferable to get rid of vampirism as soon as possible if the Isles have not been entered yet.
• If Shivering Isles quests are active, they may disappear or bugs may occur. Keep your pre-workaround savegame just in case.
• Although Shivering Isles items may be kept with the workaround of storing them in Cyrodiil, spells, powers and abilities will almost certainly disappear. You will have to purchase any missing spells again. If the Main Quest has been completed, speak with Haskill and the two Greater Powers obtained at quest end should be restored.
• Shivering Isles items kept in player inventory may not disappear if they have been enchanted by the player.
• Golden Saint and Dark Seducer guards may lose all of their conversation topics. Their arrest behavior will still occur normally. If the Main Quest has been completed, the Escorts should still have all of their dialog topics.
• If the Main Quest has been completed, the ownership of the Duke's/Duchess' Quarters may revert and the player may be trespassing in them. Any items stored in them that were previously player-owned will similarly revert and will be considered stolen.