The file name(s) would be too long for the destination folder. You can shorten file name and try again, or try a location that has a shorter path.
How to delete a file with a path too long to be deleted? Well, here is simple solution using Winrar. You can download Winrar here: http://www.win-rar.com/download.html?&L=0
Follow steps:
1. Create new Winrar file next to your long file:
2. Open the Winrar file (double left click). Click on this arrow:
3. Search for your file on the list and change its' name by clicking F2 and write something short:
4. Close Winrar and delete file! Simple as that!