I keep getting a v4 update available message when I open AC, even though I've already done the update. I can't find a way to stop the message from appearing.

Which update have you done - there is a 4.062b update now. Is it possible you did A before the last update???

You're right, I haven't done the 4.062b, but the message talks about the prolonged procedure of updating to 4.0. Will that be necessary for the 4.062b as well?
Sorry for the delay in response.

actually, this message is only supposed to come up once a week. But it comes up every time you open AC. Wish they'd fix that.