Explorer is well known to do that if it encounters a video, photo and possibly other files it can't handle.
Microsoft maintains it's not their bug to fix. So what to do? You can move the offending file to somewhere else and try turning off the Thumbnail creation in explorer (link follows.) http://www.sevenforums.com/tutorials/11738-thumbnail-previews-enable-disable.html
Again, a well worn topic with this OS maker maintaining it's not their problem.
I'm getting this error frequently lately and clicking Search for Solution online just brings up the error message again. Have to restart each time. Help please?