Greetings. I used the Trial version of AnyDVD without a problem in the past 21 days. Yesterday I purchased the key for AnyDVD and installed it. Now, Windows Media Player, the program I've used to view my DVDs on the computer has is failing to play any of my DVDs, authentic or DVD-R backups. It gives me this error: Which gives me... No other program was installed, updated or deleted from the time of DVD playback operation to failure, so I must conclude it has been caused by the installation of the AnyDVD key. Any help concerning how to resolve this issue is appreciated. Thanks!