Error code CE-34878-0
What you were expecting to happen, and what actually happened:
Multiple crashes while playing PVP. It does not matter which team you use or what opponent you face. I have tried multiple teams against multiple opponents.
How often does this happen? When did it begin happening?
Multiple times per day, every few battles is making PVP unplayable.
Steps to make it happen
Play PVP several times and wait for a crash. This better be fixed by guild wars or there will be some angry guilds.