In Visual Studio, the Target IOS device drop-down box is disabled and cannot be selected.
There are a lot of questions about this in the Xamarin forum, such as the following post:
Http://forums.xamarin.com/discussion/15372/visual-studio-ios-debug-build-failure
The solution is to uninstall Xamarin all software on the Mac side, and then reinstall:
If you is still running into this error, can-try fully uninstalling Xamarin Studio from the Mac Build Host and Re-ins Talling? To uninstall the software, remove Xamarin Studio from/applications/xamarin Studio.app and then manually delete the The Following-directories/developer/monotouch
/developer/monoandroid
/library/frameworks/mono.framework
/library/frameworks/xamarin.android.framework
/applications/xamarin Studio.app
~/library/developer/xamarin
To re-install, you can run the installer from your Xamarin Store account
After re-installing, please let me know if your is unable to deploy to the IOS simulator. thanks!
Xamarin Visual Studio cannot debug