A number of Assassin's Creed 3 users have reported in-game progress being erased following the installation of the game's latest DLC The Hidden Secrets, according to a thread on the official Ubisoft forum.
According to posters on the forum who purchased the DLC for Xbox 360, in-game money was reset along with progress in the main mission after installing the new content. Side missions, however, remained unaffected, along with a number of other features. The apparent bug does not appear to be wide-spread, and seems to have only affected those on Xbox 360; However, we have contacted Ubisoft for comment on possible fixes and to gauge the severity of the issue.
The Hidden Secrets, the first DLC pack for Assassin's Creed 3, launched on Dec. 4 for Season Pass holders and features new missions, costumes and items. The DLC will be available for all users on Xbox 360, PlayStation 3 and PC come Dec. 11.