The Tealium web companion tool throws up the following messages:
'Overview is unavailable because utaj.js does not exist on this page'.
I have checked the code on the page and the utaj.js file is present. Also this seems to be restricted to just a handful of URLs.
'The custom target environment has been set to undefined, which currently does not exist. Please reset back to your default environment to choose a different target environment'
When I reset to default environment and reload the page the same message comes up.