1. In System Preferences, launch Java which opens Java Control Panel.
2. On the "General" pane, click "View..." which opens Java Cache Viewer
3. Select Jalview
4. Click icon for creating a shortcut. A Mac alias is installed on your Desktop. Drag it to /Applications or wherever you want it.
5. Double-click the Jalview alias file to launch.
The first time it will download all of the jalview objects into cache again. Subsequent launches will only check for any updates, then launch.
Note: This assumes you have Oracle Java 1.7 installed and have already run and downloaded jalview.
[Authored by Dr Mark Saper, June 2014]