Cant play any online modes??

Every time I load into an online mode, I get an error code. For example, when I try to get into the dressing room in World of Chel, or when I'm about to search for a game in HUT, it throws up error code 74A7FC65FB403505-0000000000009999-8303560777938C5B. Would be ecstatic if I could play the game I spent 130 bucks on