Herkie contacted me on FB and told me to post some of these update notes for TBG (fixes that will be in the upcoming TBG update):
"Mission: A Wounded Fox
--- I fixed the Lucifer destroyer, Demora, not rotating to target Task Force Omega. Added a Lucifer asset with 0 foward velocity (old Lucifer model I'm afraid). I used the "ship swapping" method. But the swap will be detectable this time. An old Lucifer model suddenly changed to a new one, not much I can do there. However, you will only see this if you fail. I still can't see the "no RTB error" you said 2 years ago.
Mission: The Floating Fortress
--- I reduced the number of Shivan fighters protecting the 2 Asuras. I also added more time for the player to reach the big Shivan beam sentry cannons before they fire at the friendly fleet.
--- fixed the "no conversation/progression" error.
Mission: Lightning From Heaven
--- Fixed the Archangel error. Used the same "add asset / ship swapping" method.
Mission: Plans to Negotiate
--- fixed the Galahad / Bellatrix issue.
I also made further adjustments in many missions, some of them reducing the difficulty."