This looks seriously impressive!
Quick lunchbreak test, O16/24, Win10, default DG
The Doc looks good, sounds like you've tried to cover any possible loopholes/loose ends- very comprehensive.

Installation ok...
BUT I'm not getting past the start!
"Open any MFD, press SHIFT and the MFD's select key, then press T." - This is a little ambiguous?
If I start the MFD I get a CTD, log attached.
If I open the left MFD, press SEL, and left-shift hold + "T" it opens the DG atmo autopilot?
Holding the left-shift and the MFD's select key just cycles through SEL options?
Edit: Tried the above with 2 other vessels, no luck.
Not sure where the error is?
Module TrajectoryOptimizer.dll [Build 260723, API 160828]
TrajectoryOptimizer: version 2.5.0-beta1 (built Jul 23 2026), MFD mode registered on key T.
============================ ERROR: ===========================
Failed loading module Modules\Plugin\TrajectoryOptimizer.dll (code 1114)