to the guy with the star trek ship sets/race/ai

[zaphod-42]

If you want to continue a savegame (simultanous)you have to first login as game master (host) and end the turn.
You can not play a turn directly after modifing the data files.
This way you'll miss one turn.
To prevent missing the turn, play your turn with the data-files you've started the game and then end the turn as host with the new data files.

If you've problems launching se4, make sure you've only 1 return line between the end of the TEXT and the ========== Lines as stated in the "Installing Borg Teck Tree.txt" file.

This way i was able to "mod" it in my running games for SE IV Gold v1.78 (Patch 2).