Yep. I couldn't find info about this error too. I believe it's related to C&B because i also got an error when trying to update it (had to unregister and re-register to successfully update it).

I'm already expecting SE account management system and/ot C&B emergency maint very soon...probably when support service become live and they become aware of this issue.

My mom is also very pissed with this because she was playing when they booted her and cancelled her options.