We have upgraded to version 3.4.2. Since the upgrade
logfile is not displayed anymore. We can see the entries
are updated in the file schedule.log, but the actions are
no more displayed in the 24x7 Job GUI.

Click the little Refresh button (one that has an icon similar to the icon on the Refresh button Internet Explorer).

: We have upgraded to version 3.4.2. Since the upgrade
: logfile is not displayed anymore. We can see the entries
: are updated in the file schedule.log, but the actions are
: no more displayed in the 24x7 Job GUI.

A refresh does not load any additional log entries. The full log is also empty
when 24x7 is started. I have verified the option 'Clear log on start up' is disabled.

: Click the little Refresh button (one that has an icon similar to the icon on
: the Refresh button Internet Explorer).

I am sorry for misleading you; it appears that the log format was slightly changed in the last release. As a result the scheduler does not display log records from the log file. We are working on a fix for this issue to make it backward compatible. This fix will be provided in version 3.4.3, which will be released later this week.
Please note, this issue does not affect the logging process or causes any loss of log information, it only affects the log display. If you enable the HTML Status Reports you can use them to view and monitor log records.

: A refresh does not load any additional log entries. The full log is also
: empty
: when 24x7 is started. I have verified the option 'Clear log on start up' is
: disabled.