World Traffic now works great on Mac. There is a small issue remaining on Mac systems, with an easy fix:
If it crashes on the Mac, simply rename the folder
"X-Plane/ClassicJetSimUtils/WorldTraffic/Sounds2" and it will
You won't get any sound for the World Traffic AI planes but
it will run. There is a sound compatibility issue between X-Plane
and World Traffic currently under investigation which may case the
World Traffic plugin to crash after about 30 minutes to an hour.