There has been some changes in new MAC OS X 10.8, causing that Safari won’t launch Java Web Starts apps automatically. In the other words, when you click on “Run showbox” button on new Safari, nothing happens.
Luckily, there’s easy fix.
As you can see in video bellow, simply click on “download” button in Safari and start the Geotag Photos by clicking on jnlp file.
In case you are still experiencing issues with launching Geotag Photos, please let us know on firstname.lastname@example.org and we will help you.