Yay, Fallout 3: The Pitt has finally had all of its problems fixed.

The English version of The Pitt is now available for download on Xbox Live. If you downloaded the (corrupted) file that was originally available, you will need to delete it before downloading the new version. If you haven’t deleted DLC content before, here’s the steps you’ll want to take:

• Sign in to Xbox LIVE then press the guide button
• Go to Settings->System Settings->Memory.
• From here, scroll down to Fallout 3 and press A.
• Select Fallout 3: The Pitt (Marketplace Content) press A then choose Delete, then Yes to Delete (make sure not to delete any of your game saves)

Once the original version is deleted, those that already purchased the content can re-download The Pitt again free of charge.

Bethesda Blog