TiVo doesn't have the ITV-X streaming app, so do you just mean ITV-branded OnDemand programmes?
Do you get the same error on VoD programmes from other broadcasters?
Can you explain the path you're taking through the TiVo menu system to find this programme?
I'll check this on my V6 later, but I have a suspicion that "ITV Hub" in this query is just a marketing phrase.
Was the error 804, or 408?
Can you please try using OnDemand programmes from a few other broadcasters? Doesn't matter which they are, I want to eliminate this being an ITV-specific issue.
BBC uses their own app, so please try that just to prove your TiVo's internet connection. Also do you definitely have a TiVo, or a V6? check here please
I can replicate this, as can relatives locally, so there's likely to be a fault.
I've raised this via the VIP section of this forum and have been told it's in-hand.