Cocoa Bindings and NSWindowController

Having a pretty eventful weekend so I haven't had much of a chance to update.

While figuring out the kinks to removing characters, of which I think I've got all figured out, I ran into an interesting problem. My character tabs are handled with an NSWindowController tied to a nib. This nib's file owner object (CharacterTabConroller object) contains outlets, one of which is tied to an NSView object (rather than an actual NSWindow). In this nib there is also an NSArrayController.

Here's where it gets interesting. Apparently, in some way, this NSArrayController adds a retain count to the NSManagedObjects (in my case it was the character's learned skills) it's controlling. Originally, I set it up so that the character's data gets deleted first. However, after getting a series of bad access crashes, I noticed in the debugger there was a call to NSAutounbinder. Ok, so maybe I should be releasing the NSWindowConroller first and then removing the actual character data? Nope. Still crashing.

After a bit of digging on the internet, apparently you actually have to unbind the NSArrayController before releasing its enclosing NSWindowController. Personally, I think this is counter intuitive.