I am having the same problem, but it also seems to have connected itself to my saved file - where limewire stores all my downloads. I was in the process of downloading some stuff today and LW flashes and then vanished. I tried to reopen it and it would go throug the normal opening series and then I would get no work screen. So I intaslled the new 4.10 version and it still has the same problem. At that time I tried to open my saved file and I keep getting an error from windows