Your download will begin automatically. Below are the instructions on how to use this update:

1. Save and close all open GCK files and quit the GCK application.
2. Click on the link to download the new Gene Construction Kit 4.5 'dmg' file.
3. If not mounted automatically, double-click on the downloaded file to mount the disc image.
4. Within the mounted disc image, drag the "GCK 4.5" folder icon onto the "Applications" shortcut icon to copy entire set of updated files into your hard disc. Note: if you placed any of your own files in the corresponding folders on your hard disk, make copies of them before replacing them.
5. Launch the updated GCK program and verify the version by selecting 'About Gene Construction Kit' from the Gene Construction Kit menu.