As most have noticed already, our server is having a hard time keeping up with the demand for this update, making it very difficult to get the latest update. We are working on this issue now, and we ask for your patience while we deal with it. We set the forums in read-only mode for the time being, to reduce server load and make it easier for us to post announcements and updates on the situation.
Apart from that, the Mac version of the patcher had a few problems with it, which meant it wasn’t possible for Mac users to update to the latest version properly. We are going to address this by making the game available as a full download at the KSP Store, as soon as we can get the packages packed up and uploaded.
In the meantime, we kindly ask that everyone be patient. We are working as hard as we can to fix everything here, and things should be working normally soon.
We apologize for the inconvenience, and thank you for understanding.
The KSP Dev Team.