I'm using an NSTreecontroller in conjunction with an NSOutlineView in my program, and my program is constantly spitting out: malloc: *** error for object 0x1d70d0: double free. These messages go away when I remove the bindings in IB. Any idea why this is happening?
Note: This is behavior is not crashing my program, but I suspect that it might be the root of a crasher.
NSTreeController had some broken behavior in Tiger. I don't know whether they've fixed it in Leopard.
As Rentzsch suggests, use NSZombieEnabled to trap the second free attempt (assuming it's a dealloc). See TN2124 for instructions.