Windows Vista can't burn disc with Windows DVD Maker

I created a slideshow with music on Windows Movie Maker. Then I used Windows DVD Maker and burned the slideshow show to 3 discs successfully(.Now, I want to make some more copies, but the WDVDM says "the file is not a supported file type and it cannot be imported ". Then I went back to My Videos and tried to open the file and get message on Windows Media Player that says "the file extension (wmv) does not match the file format ". It seems like something has happened to the file that's changed it, because it worked 3 times already. I did use Lightscribe for one of the discs, if that makes any difference. Thanks for any help!!

 

Try running Error Checking (CHKDSK) on your drive/s.