I am getting the same error
I am backing up some media files from my ReadyNAS Pro to my media player hard drive (PlayonHD) via my network. All the files have copied over ok, but get the" preserving times... Invalid argument" error message and the backup job has a status of "failed". I'm assuming that because the job has failed it will try and do a full backup if I run it again?
It took nearly 4 days to run the job for 1.5TB of data so I don't want to run the full job each time, I want it to do an incremental backup. So unless this problems is resolved, this is just not going to work.
Any staff able to help?
BTW I run another job to a USB HD plugged directly into the ReadyNAS and no errors are reported.