Playgrounds don't work for chapters 4, 5, 6

I am using Xcode 9.4.1. The playground works for chapter 3 but not 4,5, 6.

Chapter 7 works. I don’t know about the rest of the chapters.

I am using the 1.0 release of the source code.

@manjitbedi Thanks very much for your question, and my apologies for the inconvenience.

I downloaded V.1.0 of the book, and source code, and like you, I’m also using Xcode 9.4.1, however, I went through chapters 4,5, and 6, and was able to open the playground files for each chapter.

What specific issue were you having?

The playgrounds would not work; when viewing the playgrounds they were appearing as text files.

I think I see the problem; the project files were set to show “show raw markup”.