@familiayaniza I was experiencing the same problem. First, make sure you have that class ( like duh =D ). Second, it has got to do with your clicking on the button.
You gotta click out then click back in then it will like select the whole area of the button then you can change the class. Somehow when I double clicked like maybe the text area, it only shows that I can edit the name and not the things like Nib or the class etc.
Just play around with your clicks.
I have to say you are a great teacher!!!!!!!!!!!!
But Im having a huge problem.
For example in this tutorial I don;t see my options to pick my "peckers" under attribute inspector. In other words when i click the arrow button "image" in tar bar item attribute its blank.
how can i make this show all the classes "peckers" I just created.??
Thank you