nsundomanager

Unexplainable NSUndoManager crash / assert in Cocoa app

Hi. I'm having a weird issue, with a Cocoa, OpenGL application I am working on. Whenever I launch my application I am getting the following messages / assertion failure on the console, related to eh NSUndoManager. I am not using the undo manager, by the way. 2010-09-05 03:28:49.184 CocoaCoreTest[51721:a0f] *** Assertion failure in +[NS...

Nested undo with NSUndoManager and Core Data

Hi there, I have a little problem with NSUndoManager. When the user is about to edit some entity A, I stick everything into an undo grouping so that the changes can easily be undone. So far so good. However, while the user is editing entity A, he can also add or edit items of entity B, where A has many B and B belongs to many A. That r...