I just purchased Toast 16 from the web. Attempting to install I got a failure message to install. I started down the rabbit hole to resolve the problem with support, the 1st suggestion was to create a new admin account, tried and failed. started in safe mode, failed again. All fire walls and protection have been disabled, failed again. I'm running system 10.12.6 (16G29) on a Mac mini (Late 2014). Any suggestions?