OK, finally near the bottom of this problem. It turned out that I had an override of -didTurnIntoFault in my tree item entity. In there I was nil'ing out a couple of relationships (which are in principle nil'ed out by the nullify delete rule) - I did this while trying to track down some other document closing bug. These 3 lines of code made it into my test app, so I saw the problem there too. It's not clear to me why doing this caused this problem on 10.6.8 (and not on 10.7 or 10.8) but the Apple support guy said I shouldn't do it in -didTurnIntoFault.
Anyway, removing that override (which is not needed anyway) fixes the problem. Simple when you know! Best wishes, Martin On Jan 15, 2013, at 05:41 PM, Martin Hewitson <martin.hewit...@aei.mpg.de> wrote: > > On 14, Jan, 2013, at 03:31 PM, Jerry Krinock <je...@ieee.org> wrote: > >>> Will -autorelease work with ARC? >> >> I don't think so. I didn't realize you were using ARC. I suppose you could >> opt out of ARC in your Method Replacement file, in order to compile that >> -autorelease. >> >>> Could you hint how to do that? A category on NSTreeController? >> >> >> I can't find the article on Apple's site any more, but here it is from the >> horses's mouth, probably written better… >> >> http://mikeash.com/pyblog/friday-qa-2010-01-29-method-replacement-for-fun-and-profit.html >> >> Method Replacement is a good occasional last resort, particularly in >> troubleshooting, but you can ship it if necessary. > > Thanks for the pointers. Though after some further work, the test app now has > only a very few lines of custom code, and the 'bug' is still there. The use > of [NSTreeController selectedObjects] is gone, so that was a red herring > (though the retaining may still be going on behind the scenes). > > So I've opened a ticket with Apple to get some support. I'll post back if > they come up with a solution. > > Many thanks, > > Martin > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Martin Hewitson Albert-Einstein-Institut Max-Planck-Institut fuer Gravitationsphysik und Universitaet Hannover Callinstr. 38, 30167 Hannover, Germany Tel: +49-511-762-17121, Fax: +49-511-762-5861 E-Mail: martin.hewit...@aei.mpg.de WWW: http://www.aei.mpg.de/~hewitson ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
