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
I had a similar issue. After archiving a project the files would disappear from the project navigator.
It turned out that somehow XCode had added the word "main" to the searchbar below the project navigator so that almost all files where invisible. Quite frustrating.
It might be the same case for you..