I just upgraded to Mavericks on two machines. No problems there, but.. on the new iCal, I am unable to add an alert. Of course I click on "Add alert, repeat or travel time" and the inspector window shows lines for the times and "repeat", "travel time", and "show as". There is a blank space between the last two items, where "alert" could be, but there is nothing there. This is on a Google-synced calendar. On an Android phone, when I add an alert to an item (even one first entered on iCal), then the alert shows up in iCal, AND the date/time has a small clock icon beside it. Clicking on the clock icon brings up the event inspector detail which now shows the "alert" lines and one can add additional alerts. Why can't I get this when I try to enter an event straight into iCal? What am I missing?