browneye:
I don't think that you opening the incubator killed them. The first hatch that I did none of them hatched. I opened up one of the eggs and also fully developed. This was only my second hatch and I too have an LG bator. I am very far from an expert but from what I learned during this hatch, I opened up the bator a few times, I had to, and I had several to hatch. I also believe you have to help some of them. I also think it was a humidity issue. I had to help a couple of mine out. Some of my chicks membranes were so dry there is no way they would have made it out on their own. I added three wet sponges, a cup of water and some damp paper towels and finally the humidity went up to 76%. After I did this I had babies popping out left and right. It is amazing how much humidity plays a roll in hatching these eggs. Even after opening the bator up it did not go down on me. I just had to open it for a second or two at a time. Don't beat yourself up over it. I think it is just nature running its course. I wish you better luck next time.