When loading into the tower you get stuck on a black screen and you have to close the game and reboot. It happens multiple times.
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When loading in, if there's a connection hiccup in trying to sync with everything, it may take it a bit longer to do so. Just wait. It should eventually spawn you in. Until then, you may hear the sounds of the area and the like, but you won't be able to move or see anything until it finally syncs you and loads you in. I think the time it happened to me, it only took a minute or so for it to fix itself.