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Operation Can't be Completed Because Backup Items Can't be Modified (Not a Time Machine Volume)

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mike693 Calculating status...
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Aug 23, 2011 8:36 PM

When attempting to move a file from an external disk to the trash, via the Finder, I receive the warning message "The operation can't be completed because backup items can't be modified." I can not move the item to the trash. I can delete the file using the rm command via Terminal. I would like to be able to delete items from this disk, using the Finder again.


I noticed this problem shortly after upgrading from OS X 10.7 to 10.7.1.


I did see the other discussions about similar problems on Time Machine disks. This external disk, which I am trying to delete from, has never been my Time Machine disk, nor has it ever been backed up via Time Machine. I do have another external disk that is used for Time Machine


There are no problems reported by the "verify disk" function in Disk Utility.


Thank you for your time.

iMac, Mac OS X (10.7)
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