Try adding assertions throughout your code. I get the most mileage by validating the input parameters to all my subroutines. If one of your parameters is a pointer, can it be nil?
Less commonly I validate return results and side effects. Also look through all of your subclass method overrides, to check whether you called the superclass' method. I fixed some really weird bugs in my iOS App when I added such calls where they were needed. It's documented that you generally need to do this, but if you forget, generally nothing really obvious happens other than some mysterious - and apparently unrelated - behavior. Enable Guard Malloc. There is some problem with that, either on Mountain Lion or the current Xcode, but the fix for it was posted to one of Apple's lists a few months ago. Since you're working on an OS X App, you can also try Valgrind. It's far more rigorous than Guard Malloc. http://www.valgrind.org/ Mike mdcrawf...@gmail.com On Sun, Jun 16, 2013 at 10:43 PM, Jerry Krinock <je...@ieee.org> wrote: > > On 2013 Jun 16, at 22:22, Julian Richardson <julian.richard...@gmail.com> > wrote: > >> I believe that ALAssetLibrary uses Core Data, so the problem could be a >> user's messed up image library. > > Thank you, Julian. I don't think that's the problem here. The error logged > indicates that the object's entity is one of "my" entities. All but one of > its attributes are nil/default. The non-nil attribute is its "name" = > "untitled", which gets assigned within a few code-lines after insertion. You > may have kicked me in an interesting direction. > > Also, I should have said that this app is OS X. > > > _______________________________________________ > > 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/mdcrawford%40gmail.com > > This email sent to mdcrawf...@gmail.com -- Michael David Crawford mdcrawford at gmail dot com Custom Software Development for the iPhone and Mac OS X http://www.dulcineatech.com/custom-software-development/ _______________________________________________ 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
