AIR 3 beta for Windows

[markush]

I have exactly the same problem. Already had it with previous version of air. I had to reinstall the air driver
After clearing all the devialet entries in the Windows register

How did you solve that?

Use something like CCleaner. Back up the registry beforehand. Uninstall AIR, run CCleaner to clean the registry several times (there may be dependent settings it misses on the first pass), reboot, install AIR.

Amazing - finally after Regedit work & CCleaner it works!!! Great community power.
And Devialet should provide that information in their Q&A / help section