Hello, I just got a brand new LaCie Blade Runner 4TB. Trying to transfer files onto it from other smaller external drives and i get the "this item is in use" error message. I have no other apps open when i'm doing this, just finder. The copy then aborts and when I try to delete the file I get a -50 error. I then have to eject the drive, re-connect it and delete the file and try again. It doesn't do it with all files, but I have more than 3TB to transfer to it so this is a pain in the ass! Should i take the drive back or is this an OS X bug? HELP!