XCode 6 Beta 3 using Swift.
In my App I use CoreData. When I run my App in simulator, XCode pops up the debugger with a breakpoint set somewhere in the CoreData libr
Following helped me ! If I undone one of this settings the breakpoint error comes again !
You have to set for your Entity-Model in your *Model.xcdatamodeld in property "Class" the same Name example: Name=Chat Class=Chat
You have to add Code @objc(yourClass) above your class
Pictures 1: http://i.stack.imgur.com/xoxtu.png
Pictures 2: http://i.stack.imgur.com/LkYYq.png
In your Core Data *.xcdatamodeld
file, prefix your entity's class name with your app name. It should look something like this when you're done: