While everyone was waiting for the release of macOS, Apple also released Safari 10.0 for those Mac users on OS X El Capitan or OS X Yosemite . Apple lists the Safari 10 update as a recommended update, that includes improvements for privacy, compatibility, and
Sometimes the most difficult issues have the simplest solutions. My current situation with a MacBook Pro just happens to be one of those situations. When trying to reinstall OS X, getting error message “An error occurred while preparing the installation. Try running this application again”.