I'm following the tutorial here: https://developer.xamarin.com/guides/ios/getting_started/installation/device_provisioning/. I have the necessary certificates and provisioning profiles downloaded and installed on my Mac. I am able to successfully deploy apps to my iPhone through Xcode. However, when I try to open "iOS Bundle Signing" in Build settings, Xamarin Studio on my Mac simply hangs. This is happening in both version 5.x and 6.x. What might be going wrong?