Error opening MainMenu.xib
objective-c, xcode
Solution
I found the solution to my problem and I share in case others are in the same situation. The XIB file was not opened and seemed to be corrupt. I thought about what changes I made recently. The last change was made was the addition of sound to the buttons of the interface. In particular, I added a sound to put a checkbox in a table. To solve the problem I opened the XIB files as source code, then I found the line that contained the sound plugged in and I canceled. Now everything works as before. I hope I was helpful to someone.
Problem
For the second time after I finished writing my application to reopen the project when I try to open the file MainMenu.xib: The document "MainMenu.xib" could not be opened. The operation couldn’t be completed. * -[__NSArrayM insertObject:atIndex:]: object cannot be nil. This is what appears in the console: 02/05/12 20:35:11,640 Xcode: Exception raised while decoding document objects - * -[__NSArrayM insertObject:atIndex:]: object cannot be nil But if I build and run the application works fine.