Unfortunately it isn’t as simple as just downloading the app on the new Mac and transferring the data over. If you backup/transfer your old mac to a new one, sometimes the problem is that the charts are still locked to the old computer. To transfer the data across, you will need to use the Mac OSX Terminal window. You need to use a ‘command line’ command to clear out the corrupted charts directory on your new Mac. 1) Exit NavLink Uk on your Mac 2) Open Terminal on your Mac and enter: rm -rf /Users/yourusername/Library/Containers/com.pocketmariner.seanav.gb.mac.dy/Data/Library/Application Support/NavLink UK/chartSets/gb/* Replacing yourusername with the user name you useRead More →