When ever I run my app in Xcode 4.4 the simulator fails to open, "iOS Simulator quit unexpectedly." It runs on perfectly on the device though.
I solved by installing xcode 4.5 and ios sdk 6. Now all work fine.
I Had the same problem i just did following steps and it works fine
1) Reset your iPhone simulator
2) Clean Build your code
3) Restart your computer
Its works for me.
You may have had a bad build on the Simulator, which is now messing things up.
(Product > Clean in XCode)
(iOS Simulator menu > Reset Content and Settings)
That should do it.
Reboot the simulator ..... sometimes some apps remain in the memory.... Otherwise reinstall it ... some data could be corrupt... :)
I had the same issue on Lion. After upgrade to Mountain Lion I haven't such issue.
I solved by installing xcode 4.5 and ios sdk 6. Now all work fine.