Just a head's up that in the latest 4.4.68 release candidate for Mac, under the Lighting/Enviro Light settings, the 3rd item: "Strength in Atmosphere" I believe is missing the word "Atmosphere". 😎
I have already communicated this to Matt in a personal message: Also, the letter "e" of "Name" is missing on the left side of each title (e.g. your screenshot: "Nam(e) Enviro Light").
Maybe Matt is working on the Speak and Spell version of Terragen. ;D Start the kids early.
I kid, I kid.
We'll probably have a fix for this in the next few days.