Hello when I tried to add a nickname the game freezed for me. I couldn't cancel the action or give the nickname. If it helps it was a brand new game with only my office in it. I have tried it twice in the same set-up and in both cases the game freezes. I also can't go to the home menu I have to force close my game.
edit:
This only happens when there is no producer in the office. Maybe grey out the nickname option if you haven't dropped the producer in yet?