RepliCopy

I have a world that I set 5 ore extractors in a fenced in area and visit it once a day and now everytime I go back and it starts to load the entire game crashes and goes directly to desktop. I have tried changing all graphics option to the lowest setting and nothing makes a difference. I have also tried rebuilding chunks, flying, digging, god mode, you name it I have tried that I can think of. Also not going to give up the world, I have built to much. HELP Please.