When you go to play Assassin's Creed IV: Black Flag on your PS4, you'll be promoted to download a big update.

Update 1.04 comes in at a massive 2.3GB and it centers on the game's lengthy single-player campaign.

Among other things, the patch fixes the Friends bug that wouldn't let gamers sign into uPlay if they had more than 100 Friends. It also repairs a few other issues; here's the full list:

Another update is on the way that will tackle reported multiplayer issues. Given a game this size, any significant glitches can prove immensely irritating. Have you encountered any of the problems this new patch fixes? How about multiplayer? Any problems there?