As I understand it FTM will only install on one computer, so that is why I believe I have to uninstall and reinstall on second machine. This is a Mac machine, so I dont know if it is different for windows.
Let me give you an example of the probs I am having, the other day I added my cousins child. This side of the family is of no interest to me, so I have not followed any links in this direction. The child was the bottom of my tree.
Today, I had 21 copies of that child listed beneath her dad!. I worked through my tree and found spatterings of 15 plus duplicates of people all over the place. I have spent hours and hours on this, and believe me I have been working on these deletions since 9.30 this morning.
Having removed all of them (I think) I tried another synch. It got right to the final part, finalizing and crashed again.
If I can install FTM on another computer without taking it off this one again, I will do so, happily.