I have a problem trying to get lightroom catalog backup files backed up using my backup software LiveDrive. The people at LiveDrive tell me that the files cannot be backed up because they have 'extended attributes'.If I unzip and re-zip the backup then it gets backed up OK, so clearly there's some difference between the zip files created by Lightroom and those created directly by Windows.Can anyone cast any light on this? I'm tempted to just write a powershell script to remove extended attributes, but not sure which would be safe to remove (would Lightroom be able to restore properly afterwards), and not entirely sure which would need to be removed to allow the backup to happen anyway.