Default Using Hulu plus in the UK via Chromecast

can anyone offer a solution for this yet?

1. I'm based in the UK.
2. I have a working hulu plus account (and can use it happily on a pc/laptop/app on android using proxy software hola, tunnel bear or hotspot shield)
3. i have a pwned chromecast with kyocast

When i try to cast, i get an error on the chromecast, (ill update with the exact error message later!)

is it something to do with the vpn service in Kyocast?
I regularly use Netflix US from the my phone to chromecast and it works great.