You can leave the question mark away in this post's title. :smile: It works great in P3Dv3.
One more thing:
Lockheed Martin 'demands' that add-on AC are installed outside the core P3Dv3 directory. Some designers ignore that (a.o. Carenado), while others like RealAir obey that rule. Maybe the readme.txt should be updated for this. There must be a correct path to the gauge. I stored the CAB file on two locations to be sure. One in the panel.cfg directory and one in the gauges directory.
Dirk