Just downloaded and installed v3.3.1 on my iMac (not the computer I use in the field for imaging), running the latest version of Mojave..

Wanted to try it out usingt the simulators. When I tried to Plate Solve, it asked me to (re-) install Home-brew, Python 3, etc. When I clicked ok, it said Home-brew installed, then simply "Python Install Failure"--so no go...

-stan in Brooklyn

Just downloaded and installed kStars v3.3.3 and the problem has gone away in the new version. It all works like a charm. Thanks, all!

-stan in Brooklyn