The EPG on the TV360 box isn't showing any programming information for Christmas Eve for Channel 5 or Channel 5 +1 yet, however a quick search shows that the ACG&S series 6 episode 7 (Comfort & Joy: Christmas Special) will be screened on Boxing Day at 19:50 on 5 Select.
According to the Radio Times <Here> This year's festive special will air on Wednesday 24th December at 9pm on 5 - since you are posting in the V6 forum and quoting a V6 error code then you should be able to set the recording via the EPG using the time slot isntead of waiting for the EPG to update and populate.
When the VM EPG differs from the website of the broadcaster's published schedule for programmes as it does in this case since it hasn't been populated yet, you should email tivoguideerrors@virginmedia.co.uk Although they don't usually reply to the emails they will update the EPG with the correct info/metadata.
Just for info, all of the Christmas specials (apart from series 6 episode 7 which hasn't aired yet) are available on the 5 app.