XenServer upgrade via NFS/HTTP/FTP

I couldn't get this to work with NFS, so I tried ftp.

I did get it to work, but only by using this format:

user@/Xen

and leaving the user and pass fields blank.  If I entered the username on the dedicated line, it did not work.

Referenced this post:

http://forums.citrix.com/thread.jspa?threadID=290031