Error EC8F17B3 Cannot complete copying

Hi,
Norton Ghost gives me this error when I want to copy the files from C drive. I think I messed up my Windows with this error. I tried to make a backup with Norton Ghost for C partition and I had this. Can anyone help me to fix this ? What this error means ?
Thanks !

Cannot complete copying of (C:) drive.
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(UMI:V-0-3215-6067)
