what does this error message mean and what can i do about it

[c=003BB2][i]when copying a media folder with over 3,000 music videos in earlier i got this pop up message error regarding one of the videos, i chose to skip copying that file over, and copied the rest successfully...here is the message;[/i][/c]



[c=A69800][i]it was a music video, is there anyway i can get this file to copy over or why did i get that message?

also, i'm still using a windows 7 desktop computer which works ok still[/i][/c]