The problem you have, though, is because the adverts and the programmes on the commercial channels are provided from different servers.
The handover to the ad server is always handled impeccably (surprise surprise! - but follow the money) while the handback is famously iffy.
Ofcom ought to have a rule to say that if the broadcasters can’t hand you back to your programme after an ad break, then they are not entitled to charge for serving them.
But until that happy day, the best thing you can do is complain to the offending broadcasters.
‘Have nothing in your houses that you do not know to be useful, or believe to be beautiful’ Wm Morris
I am also experiencing exactly the same issue. Seems to give this error for All 4 only and My5 gives a different error 'VJS-2010'. I'm using a TalkTalk YouView+ Box
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Greetings and welcome to the Community!
https://support.youview.com/youview-box/error-messages/fix-for-yvm102/
The problem you have, though, is because the adverts and the programmes on the commercial channels are provided from different servers.
The handover to the ad server is always handled impeccably (surprise surprise! - but follow the money) while the handback is famously iffy.
Ofcom ought to have a rule to say that if the broadcasters can’t hand you back to your programme after an ad break, then they are not entitled to charge for serving them.
But until that happy day, the best thing you can do is complain to the offending broadcasters.
@lowecheryl2023 recommend you try the method in the link above.