Main Window : Event Log
Event Log is a journal that records all important events, such as connection errors and miscellaneous informational messages. Event Log can help you to identify problems with Network Assistant.
Some recorded events can be very important (for example, serious communication or incompatibility errors). Such records are highlighted with event-specific color (red for errors, yellow for warnings and blue for informational messages). After such event has been recorded the Event Log icon starts blinking in order to attract your attention to that event. If you don't like such behavior you can disable this blinking in the Setup (see the "Disable event log notifications" option).