Xcode 6 - Unknown type name 'NSString' / Expected identifier or '('

Question

When I am running my project in Xcode 6, I am having many weird errors.

Parse Issue - Unknown type name \'NSString\'
Format argument not an NSString
Could no         


        

Answer 1

The problem was that I had some .c files in my project, apparently Xcode 6 doesn't like .c files.

I changed the extension of the .c files to .m and Xcode 6 is happy again!