I\'ve loaded a project in Xcode 4 after not looking at it for a while. Xcode shows its progress bar and indicates in text that the project is loading, and it appears to fin
For those who make it here, I was opening a older version of a similar iOS project after upgrading to the latest XCode (6.2), and was seeing the symptoms labeled in this question (missing files, folders etc.)
My solution: at the bottom left of the screen, unselecting 'Show only files with source-control status" which happened to be set on (it's blue when on). The icon looks like a 4-pt star inside a square.