Error MT1009: Could not copy the assembly


As described in our Release Notes, this is a known issue in Xamarin.iOS 7.2.6. This issue is due to file permissions needing higher privileges when Xamarin.iOS is installed with a different user account then the developer's main account.

To workaround the issue, please open the Terminal.app on the Mac workstation and run the following command:
sudo chmod 0644 /Developer/MonoTouch/usr/lib/mono/2.1/monotouch.dll.mdb
This issue should be resolved in an upcoming release of Xamarin.iOS. However, if the issue remains on a newer version of the software please e-mail contact@xamarin.com with your full versioning information and full build log output. Alternatively, you may post to the bug report tracking the error to let our iOS Team know that the issue remains. 

Last Updated: Oct 21, 2016 06:11PM EDT