Problems writing on NAS on Airport Extreme (Yosemite)

Jan 2, 2015
Reaction score
We attached our NAS (WD MyBook for Mac) via USB to our airport extreme. I am using a Macbook Air (4GB) on Yosemite with an external Superdrive to import CDs into the Library on the NAS. It started out quite well and the first 3 CDs went without a problem. However, on the second song of the 4th CD I got an error -50. I tried to reboot but no change. If I point to Library to a local FS everything works just fine.

I can see the directory on Finder and can CD to it in a shell. However, if I want to create a file using touch (e.g. touch xx) I get an invalid argument response. If I want to create a directory using the finder I get the same "An unexpected error occurred (error code -50).", which seems to be passed up to iTunes from Yosemite. All directories are 777 and should be writable by everyone.

Does anyone have any suggestions?

Shop Amazon

Shop for your Apple, Mac, iPhone and other computer products on Amazon.
We are a participant in the Amazon Services LLC Associates Program, an affiliate program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.