clarnT

I'm sorry if this a repost: I hit submit and something seemed to go wrong. First copy your old KSP folder and save it some place safe. What I did to update 1.1.3 to 1.2.2 on Mac. First I did everything wrong. I don't have the game in Applications, I have it in my Download folder. When I copied the contents of the DMG file over, I did it over the KSP file in Downloads. It asked I wanted to overwrite or merge the folders. I said "merge." Then I decide to remove all my old mods and launched the game. Any ship that required a mod, i.e. KER, those ships weren't loaded. Ha! I lost all my ships in flight! To fix it I reinstalled the mods with the newer versions and then went back to my old KSP folder and copied the persistent files from the different scenario folders into my new KSP scenario folders (first saving my new persistent files with a different name just in case.) All my ships reappeared! Whew! I hope that this might help someone in the future.