robfish: I have just done a factory reset, signed into my Nexus Player with my NZ Google account and installed NetFlix from the Play Store
I still get the -100 error
Installed NetFlix on my Nexus 6, and that works fine too although casting it to the Nexus Player does not work. (Other apps cast fine.)
Have you tried a free trial with another DNS service just to see if it makes any difference? Dns4me works fine for me.
Ive setup a DNS redirection on my router for anything that tries to request an outside DNS server but nothing on the nexus player does this.