In the past I played the attack of the bteam mod and when I starter using the archeology mod it corrupted my singleplayer world I had been building on for the past 4 months. I made a new file and spent over 8 months with this world and I was about to start a series on this world when I placed an analyzer and my entire file deleted itself. From what I have seen, this mod pack is just bad news. It has corrupt and deleted months of work and doesnt run smoothly.