dude, i totally know what youre talking about!!! After i played alien autopsy i tried to veiw my items and there was like only aliens in my pocketes, then when i tried to sell them or throw them out it froze up! then id try tp play like normal, just with out using my items, the game forgot my name or something and called me 'unnamed sim'. I had just gotten to mechanical 5, too when this stuff first started happing. I had to play 3 times to figure out it that alien autopsy that made my game go pshco on me. So yeah, beware of alien autopsy cause it will screw you.