Delete Arma 3 folder and Arma 3 - Other Profiles folder inside the documents folder. Then start up your game and it should re create those files so you can change it.
Take your time with the update! We would all prefer a shined and buffed present rather than a rusty one that looks a bit rushed! But keep up the great work! You guys will make this community go far with this new leadership! @Clint Beastwood <3
@1:22 you probably shouldnt put that clip in your montage, thats considered exploiting and can get you banned if the wrong people see the montage (Take this from personal experience) but other than that good clips