I am having the same problem as others on this page. My program worked fine at the end of page 169, but not by the end of page 171. My saved file did not have the rsmn extension, and it could not be opened. I tried all of solutions on this page, but they didn’t work for me. I can’t believe that Xcode is designed so that developers have to tinker with the plist to get a correct build.
What did work for me finally is to download the solutions and exchange the plists file. Then things worked perfectly.
My question is have things changed in Xcode from when the book was written and now? The book give very clear directions, but they don’t seem to work. I am running Xcode 4.3.2.
Thanks in advance for any help.
– Bob Ayres