i am running firefox 3.6.9 and have been running 1 click youtube downloader version 1.5 for ages for kds songs as i have 3 autistic children . suddenly , overnight it is no longer working at all . the download box just flashes up and says 0 bytes and nothing has been downloaded ? i have installed nothing new and changed nothing . i am running osx 10.6.5 . this has happened overnight as it was working fine yesterday .