This version of BBC iPlayer is closing this September. See the FAQ for more.
The FAQ says
We've decided to close this version of BBC iPlayer. It's running on an old outdated system that is expensive to support and this wouldn't be an efficient use of the licence fee
No surprise really, I think this was the only box using this version? (Could be wrong about that though)
We only use it when we can't be bothered firing up the Xbox instead.