Xcode Interface Builder is showing “No selection” for all files

Question

No matter what I\'ve got selected in Interface Builder, the Inspector did apparently not register the selection and only showed \"No selection\".

I tried opening an

Answer 1

After trying above all tricks, I just made a copy somewhere of the file which has the issue and deleted that file from Xcode. Opened it directly from there and file seemed good. Dragging it to the project solved this heinous issue.