I use a sheet with 3 NSTextFields and a Cancel- and OK-Button to edit the attributes of a Core Data Entity.
The text entered in the NSTextFields is only updated in the Core
The answer in my case is to check the “continuously updates value” option in the NSTextField’s value binding.
For other answers to the same problem see: Red Sweater Blog — Stay Responsive: http://www.red-sweater.com/blog/229/stay-responsive