I received this error after the update in September. Hasn't been fixed by Sony yet. I can write messages but can't
scroll up to review them. This is a problem when trying to see pictures friends have sent or review past information sent. I just can't believe it's been 4 months and they haven't fixed this issue at all. I also get an NAT error in party chat occasionally when my NAT shouldn't be preventing me from chatting to people.