We use Avast! Professional 6 in our office. Several computers have no internet access, so we manually start vpsupd.exe which we put regularily on our file server. We use 6.0.1376 and try vpsupd.exe from 01/01/2012 and 01/02/2012. License is valid until 2014.
Since today we only get an error message “avast.setup - error in application” when we start vpsupd.exe. No update is made.