Auto-update seems to work because it is configured to update every 3 h and
- it has done so for the last 24 h without generating any alert ...
- I can see on the "Antivirus/Antispyware main" screen that updated was completed as expected

However, Manual update generates (still) the same error ...

Since this affects several users (see above posts) and because it has affected my two computers at the same time, I guess it cannot be due to a faulty configuration of the clients but a problem with the ZA server (and with what it sends in response to a request for a manual update).

Any other idea and any solution ?