Everytime I try to open a media file in Windows Media Player, I get the following error:

C00D11CD: Unknown error
Windows Media Player encountered an unknown error. This can occur when another program or operating system component encounters a problem but does not communicate the nature of the problem to Windows Media Player.

Error ID = 0xC00D11CD, Condition ID = 0x00000000
The issue seems to have started after I deleted a number of files from my computer. I think I may have accidentally deleted something important by mistake, but since the error message won't go into any kind of detail as to the exact nature of the problem, I'm rather at a loss as to where to start. If anyone here has any ideas, they'd be most appreciated.

mag