. I recently bought a new iMac27. I have an ioSafeG3 2TB external hard drive that I back up my files to. Where I am having a problem is backing up my images folder to my hard drive. After adding images to my folder I will drag the image folder over to the external hard drive icon and copy over the old folder. I have done this for over a year with my old iMac20, no problem. Now when I do this I get this error message -- The operation cant be completed because an unexpected error occurred (error code 0). If I change the name of the image folder by adding a character or number to the name of the folder, then I can copy the folder to the external drive. It is when I try to copy over the folder with the same name that I get the message. I read some some stuff on forums about erasing and reformatting the external drive to Mac OS Extended (Journal) format and I did that. It still gives the error message. Any help will be greatly appreciated. thanks kindly, Chris .