I was using WMA 9 and everything was working just fine. Even my DivX movies worked just fine. However, after upgrading to WMA10, I tried to play a movie file and it said that there was an error playing the file, the codec failed to download as well. After which I rolled back to WMA 9, that didn't solve any problems, in fact it made it worse. Nothing is able to play on my WMA at all. Not even my CDs. I have tried uninstalling and installing, but nothing seems to be working. Now, I get a new message that it requies some tag 1 codec. Which I have tried finding but in vain. Could someone please help me out in this matter. I am in desperate need of help. Thanks.