1) GPS Maps: Basecamp lagging on a MACIf you find that Basecamp is running very slowsly on your MAC, and that it is slow to react when you pan or zoom on it: We advise that you uninstall Basecamp. Then update your OS (Operating System) on your MAC. Then reinstall Basecamp. This may resolve your issue.
2) VIDEOS: Installing T4A GPS Maps – Mac
3) VIDEOS: Installing Tracks4Africa GPS Maps on your Mac Computer from an SD Card
4) VIDEOS: Install T4A GPS Maps on Mac (From Digital Download)