I bought the pack on gog and played the original, all was well. I decided to try XFIRE and started from the same random map created by the original game since they share the same save/load folder. So the issue is, game crashes after 10-12 moves. It seemingly has nothing to do with graphic / sound. I just press end turn and it crashes because the way the game was set up. If I try and relaunch the same saved file (say year 2025) it will crash over and over again when turn ends. If I go back to a previously saved file (say year 2019) and just hit " end turn" 9 times I can find a file in which the game does not crash at 2025 (that's just a random year). I got this way up to year 2072 but playing like this is super tedious, always checking 9-10 turn moves ahead to see if thix particular branch ends up crashing and going back and doing the same things over again hoping after the save the branch will change. Sometimes it's like hitting a " set point " and I have to start even further into the past. The only constant that I've found is that it always crushes when a mind worm attacks a hachling. Is this a known issue when using a map generated by the original game with the alien crossfire expansion?

I don't understand "using a map generated by the original game with the alien crossfire expansion."