Weird WHS Copy Error

[nitrobass24]

I got this error when trying to transfer to my WHS.
Not really sure what it means.

http://img148.imageshack.us/img148/8996/errorcdz.jpg

[epimetheus]

It looks like the quota system has been turned on for the destination folder. That's the only thing I can think of. I've never used Windows' built-in quota system before. The only place I've ever used quotas was on FTP's.