If TfL gave us the slightest clue about what might be going wrong, then maybe developers or even the less sophisticated like me could help.
My guess - and that is all it is - is that the problem is a system which would work perfectly if the human input to it worked perfectly colliding with a human input which is, well, human. That is not always the human’s fault, if they have been given insufficient guidance on what does and does not matter (such as having current and expired files correctly and unambiguously identified).
Years ago I can remember watching some reply “yes” to all the prompts that were designed to ensure stuff was checked. When asked, they said they always replied “yes” because it got them past the prompt!
To update from last week, there are now 560 dodgy links. listed at
There are also some which link to files which are no longer current but which haven’t actually stomped over a newer version. I have not included these in the 560.