I downloaded and attempted to open the 1.6.4 Quest Editor numerous times and it will never open. I always move the individual apps to the applications section.  Is there a set up or method that I am missing?  It is on the El Capitan OS. 


Thanks for your time.

[llamazing]

You might have to compile it yourself. The build provided on the downloads page probably doesn't target such an old OS.

Thank you. 

Any recommendations for guidance through this process?