Migration Assistant

I migrated from an older model iMac and transferred applications and user data via Migration Assistant and Firewire between the two machines.

Norton technically runs with popups and network monitoring in the background, but the application interface does not open. The dock icon bounces and few times then closes.

I've tried reinstalling, but the installer I after download gives the error of "You have a newer version of the product already installed. We do not support downgrade of out product. Please contact Support. Try later"