ChrisZ755 wrote on Sep 8^th, 2021 at 8:03pm:

[Window08], [Window09], [Window10] are missing.

That's intentional, so it's the same in my panel.cfg for the 757, and has nothing to do with not being able to see the aircrft in FSX/FSX-SE. However, if any of the .mdl files are missing (x572_101.mdl, x572_101_interior.mdl, x572_101_interior_fdo.mdl, and x572_401.mdl), that could be a reason for not seeing the aircraft, but it would/should also give you a messsage that says it's unable to load the aircraft. It's worth checking to make sure those files are in the Steam/SteamLibrary\steamapps\common\FSX\Captain_Sim\757-III\models folder.

Can you attach a copy of the csx572_1.700.log file found in the C:\ProgramData\CaptainSim\FSX\x572 (or C:\ProgramData\CaptainSim\FSX-SE\x572) folder as this file could show an error during the installation, that might show the cause of your problem.