This is interesting, even though I have no idea what you are talking about.
I have the Steam Version 10 Build 69005.00, and FSUIPC is not working with it. Doesn't show up in the menu bar.
So I am assuming I am having the issue that you are talking about, and looks like it may not be fixable???
I also have FSX Deluxe Edition, with Acceleration pack on a separate disk.
Should I maybe remove the Steam Version and Install the Deluxe version to save myself a lot of head aches, or maybe not.
I had the Deluxe version running before, but it seemed to have issues with Level D 767, like I couldn't change the Barometric pressure on the analog gauge, and does not show up in the menu like it did with FS2004, so I thought to try Steam.
But nothing shows up in the menu bar for Level D or FSUIPC4 in Steam.
Any idea's would be greatly appreciated, before I remove everything and re install it.
James
I miss my Nice mostly Stable Easy to use FS2004 😞