[imexhouse]

Webmaster mode for my store based on ver. 4.0.19 has stopped working.
Well, I should say, it's not working fully any longer.
The console loads, but there's no "highlighting" on mouseover and no template names are displayed at the bottom of the page (status bar).
At the same time, my other store, based on ver. 4.1.8 has had no such problems. I've gone through most of the .tpl files looking at timestamps in hopes of locating a file that I might have inadvertantly changed, but haven't found any.
Just talked to the people administering the server, but they have made no changes on their side.
What would cause such a behaviour?

Thanks,

Jack