(Error code -36) Can't delete files from external hard drive
So as I was copying files to my hard drive (Seagate Backup Plus Drive) my Macbook Pro went flat, and so the files obviously didn't get to finish copying. Now they're greyed out in my folder and when I try to move the files to the trash it comes up with this message:
"The Finder can’t complete the operation because some data in “-----” can’t be read or written.
(Error code -36)"
Does anyone know how I can fix this? I've tried a couple of different things and nothing has worked, and I don't wanna stuff around too much in case I lose everything.
MacBook Pro, OS X Mavericks (10.9.4)