After the 'House of Wolves' expansion was released, the Moon, Mars and the Tower became inaccessible. This was not an issue until the expansion was released. When I launch either a mission on the Moon, Mars, or just go to the Tower, my 'Destiny' crashes and i have to load another game before i can load 'Destiny' again. This is preventing me from doing numerous missions such as the daily, weekly, and nightfall along with other strikes located in the areas listed above including ones available prior to 'House of Wolves'. If anyone has a solution to this problem or a similar problem, please reply ASAP.