On a Windows Vista computer, you click a hyperlink to a .wpl file. If the HTTP header returned from the server contains content-disposition with a file name that includes encoded characters (for example, testwpl_02%2B02%2B2009.wpl), then Windows Media Player may report the following error:

“Windows Media Player cannot find the file. If you are trying to play, burn, or sync an item that is in your library, the item might point to a file that has been moved, renamed, or deleted.”

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