Thanks sundog, I appreciate you looking into this. Skymaxx Pro clouds are truly awesome.
Attached is my log file and also a short video showing another oddity I found. If I use the Plugins manager to disable the Gizmo64 plugin, clouds will initially appear but then fade out. This is repeatable, enable Gizmo64, then disable, clouds again appear and then fade as in video.
Any visual affect setting lower than HDR gives this affect, HDR and above work as expected.
Log.txt
CirrusSF50_1.avi