Magster

I have a 1mg apple nano ipod. I have no problems when I first installed it. But all of sudden the ipod icon has disappeared from the source box. Its not downloading any songs. It use to download and press recently added and it automatically updated. It doesn't do that. Doesn't recognise the programe. When I try to download the quicktime cames up and I can't download any songs. My old songs are still on Ipod but on computer. I have updated version of Itunes.