From WWE.THQ.com:
"Today, WWE Games and THQ released a patch for WWE '13, addressing various crashes and bugs, including a crash related to using created arenas in Universe Mode. The patch is available for both the Xbox 360 computer and entertainment system from Microsoft, as well as the PlayStation 3 computer entertainment system. Download it today by logging on to Xbox Live or the PlayStation Network in WWE '13.
If you continue to have issues in WWE '13, please help us identify and isolate them by describing them in the official WWE Games forums, where we have a dedicated Bug Reporting section frequented by numerous THQ employees. For even more information, feel free to check out WWE '13's online manual, customer support FAQ and server status page.
Thanks for your patience and understanding as we strive to bring you the best WWE Games experience possible."
There are still a lot of issues and known bugs in the game at this time, so a second patch can be expected in the near future to address a number of them.