Missing Notification Center widget #
Some customers have noticed the iStat Menus widget is missing, and can not be added to Notification Center. This Stack Exchange response may provide a solution:
Missing menubar items #
The sensors shown in the menubar are determined by the “Sensors to show in menubar” area in the Sensors tab. If this is blank, nothing will show. To add a sensor to the Menubar Sensors area, drag a token from the section below.
Disks and batteries work the same way — what’s shown in the menubar is determined by the “Disks to show in menubar” and “Batteries to show in menubar” areas. Drag a token into those areas to choose which disks and batteries are shown in the menubar.