I downloaded this Installer with Safari, with Chrome. I could open the downloaded dmg. Please try these: 1. Restart your Mac, download the installer dmg again, can you open the dmg? 2. Can you try it on another Mac? 3. Download INT AC 28 installer dm...

Please contact the Technical Support Team, they will ask you to send us log files, we can examine them to figure out what the problem is.

The following problems can cause this error: 1. Maybe the downloaded Installer file is corrupt -> please download the Installer again from the website 2. Maybe antivirus program, firewall program blocks some installed files -> try to disable temporal...