The error message sounds like the one you would get if you don't have permission in your operating system to perform the move. You need to have write permission on both the source directory and the destination directory.
As I do not use Macintosh computers, I am not 100% sure I would give you the right answer, but I'm sure someone else will be able to provide the right answer.
Hi, Thanks anyway.
is there someone who can help me?
Is there someone how can help me with this.