When I start Flyinside-fsx the following window pops up:
I did work once, very well, however it wouldn't let me select my game controller to bind buttons to. The listed controller has no buttons, and there's no way to select a different one. The next time I started Flyinside this window popped up. I uninstalled the app using the uninstaller, reinstalled it, and still popped up. I'm using it with Steam VR, HP Reverb G2. Remember, it worked just once before.
Computer specs:
Windows 10 home (updated)
Processor: Intel I9-10850K 10 core
32G ram
Nvidia 2070 super