Hi, this is what you can do : it worked for me and hopefully for you and everybody.
I used a software called pacifist (shareware)
open pacifist and drag and drop the installer in pacifist window.
Doing this, you will see all components of the installer
Select them all then click on the install icon of the top bar of the pacifist window.
You may be to enter your admin password.
Restart your system
When back in capitan, plug your key and the app should automatically start.
et voilà !
Greetings from France

Ben