Everytime I run my app on the iPad simulator, it works flawlessly. But, when I run it on the iPhone simulator, when I click the home button, I get an error in Xcode in my ma
I just ran into the same issue (wasted about 2 hours on it, in fact!). There was no exception thrown. Ultimately I stumbled across an answer like this one. Resetting and restarting the simulator and XCode didn't clear it up for me, but a reboot did.
So, if you see this, and there is NOT something about exceptions in the backtrace, then I think a restart of your machine is likely to fix it.