I uploaded a new version. Should now run without problems.

Note: Do not try to replace an NSButton's cell with something that is not an NSButtonCell.

I'm using NSControls for the demo application instead. I remember fixing that before, but I guess I forgot to commit that change to my svn repository and so the old, broken version sneaked in again.

Hm. Maybe I had an old version lying around and mixed something up. Thanks for telling me, I'll check it later in the day.

OK, since the _canBecomeDefaultButtonCell is a private method to NSButton I replaced the MainMenu.nib file of your new project with the old one and the problem is gone. Hence your new MainMenu.nib must be gotten corrupted somehow.

Best regards,
Wilfried

Hi, I Tried your new version, obviously changed today (Febr, 10. 2009) and wanted to give you an heads-up because it seams to be brocken!
As to what I found out so far, the - (BOOL)_canBecomeDefaultButtonCell is missing your AMIndeterminateProgressIndicatorCell class which produces an exception.

Best Regards,
Wlfried

This is a great bit of code. Good design and implementation means that it works with bindings out of the box. The column controller class does not subclass NSTableColumn, but perhaps for good reason. When I tried this column dragging choked.
Ran without problems on Leopard, Xcode 3.0 and Garbage collection enabled.

Thanks.

Jonathan