Hi, I'm getting a strange error trying to bind objects into an NSPopUpButton. In Interface Builder, I have an NSArrayController bound an array in my document. I'm binding the contentObjects of my popup to the array controller, and the contentValues to a string key within the objects in the array. It all works well except for one thing: The two top objects are the ones in the array, and they're correct. The goofy one on the bottom is I guess being inserted by the runtime initially, and I have no idea why. RBAudioDevice is the class of the objects in the bound content array. Now, when I select one of the other two normal items, the strange one goes away and never returns. After that, it works perfectly, but I can't get it to stop that one item from appearing when the app launches. "Automatically prepares content" does not make a difference, nor do any of the other settings. Any ideas? I've never seen this before.