If anyone has a save game saved where you can reproduce this bug, please e-mail it to me (like the turn or two or three before the transport invades). I'll need both the .sav file and the corresponding folder.

The bug is this: you invade using Information Warfare as the tactic, and when the invasion is over, you suddenly have 100 billion+ people in that star system.  I've been trying unsuccessfully to reproduce this bug on my own.  I've tried both with and without fleets of transports and combat transports, on high and low population systems.  I'm beginning to think that it can't be reproduced in a debug version, and it's about to become a vendetta for me.