Had the same problem. It's the way you terminate the debugging process. Just add another step:
4) STOP the application (from XCode)
ok this fixed it thanks, so then I have two different crashes that are not linked, because the app still crashes after beeing submited to the app store :(
@xtrimsky: ouch, that other crash is from your code or the way you're compiling it. Check Will's answer to see if you can read crash logs. Also: it might be possible that your app is crashing only on very certain type of devices/iOS-es. Check this link: stackoverflow.com/questions/9567359/
@xtrimsky: in that linked answer check if this applies to your app: are you creating any UIImageViews, UIImages or something similiar in the background thread?
here is my crashlog, I don't see anything helpful but I'm trying to understand it: pastebin.com/4Lhhdiyj