I've not long had Vista (Home Premium) and the windows media player that came with it used to play the .ts files that I'd exported from my digibox hard drive. Then - for apparently no reason - Media Player decided that it was no longer going to open the files, not even the ones that it had opened previously. It came up with the cood1199 error, but I don't understand why it's stopped playing them as it used to. It's infuriating. I don't want to have to download another program to play them when Media Player should - as it *did* - play them. Is there anything that I can do to get it to play what it used to play?