i was able to play the beta now for max 1 hour, all other times it crashes with CE-34878-0 error.
i was searching in playstation forum, they say it's a problem of ubisoft.
ubisoft say it's a problem of playstation.

it's the only game with this error from me, so i think it's an ubisoft problem.
i was interested in this game, but at this time, no thanks.

has anyone any idea to solve the problem? reinstall, initialize and all other tips are done, and i won't do it again.