Hi Brian,
This is because the file in question was uploaded a long time ago and has since been swept off the server by our Daily cron job that checks for datasets over 28 days old.
As for the need for more data or not, I cannot anwer that as I am just technical
- Hopefully Pete, Steve or Mike himself can answer
Just a reminder that datasets are only kept on the server for 28 day before they are removed.
Kind regards, Phil.