Cannot open Xcode project on a new Mac

Question

I think I have made a bit of a mistake here.

I designed an app a few months ago and even got it in the App Store. Since then I have purchased a new mac. I copied my Xcod

Answer 1

Can you not retrieve the original files from your other Mac?

copy and paste

Would imply that you can. Maybe you should attempt to copy the files again, alternatively, if you just need the one .swift file you could probably copy the text from it and put it into plaintext and then copy that back out into a new xcode project if xcode is having such trouble opening that particular file.

Are you sure that you're not missing out some details? Seems almost too easy to answer this one.