An update addressing an issue where players may not be able to complete the Cult of the Vault Challenge in the Mines of Avarice has been released on PC, Playstation 3, and Xbox 360. After installing this update, the challenge will be able to be completed.
For update information, please visit:
PC: http://support.gearboxsoftware.com/entries/22126761--PC-Update-Hot-Fix-Information
Xbox 360: http://support.gearboxsoftware.com/entries/22147216-Xbox-360-Update-Hot-Fix-Information
Playstation 3: http://support.gearboxsoftware.com/entries/22127181-PlayStation-3-Update-Hot-Fix-Information-