Do not put your Mac to sleep. Keep the Product Manager in the foreground. If your connection drops, the Product Manager will resume automatically.

A dialog will ask:

Select your external drive and create a dedicated folder (e.g., /Volumes/YourDrive/Toontrack/EZdrummer ) to keep files organized. If you have already installed it to the default location ( MacHD/Library/Application Support/EZDrummer