SAP Netweaver: 7.31 ""Log files are not loaded yet. Press Refresh after short time"

Problem:
You want to view the logs on a SAP 7.31 J2EE Engine but you get the message
 "Log files are not loaded yet. Press Refresh after short time"

I found a SAP Note that gives a hint with the security settings.

http://www.stechno.net/sap-notes.html?view=sapnote&id=1631616

Solution: Login to the logview via https then it works