Calendar not loading event details

I have another inconsistency in my application: I have five tables with the calendar action enabled. For four of the five, everything seems to be working smoothly. For the fifth table, I can pull up the calendar display, and see events listed, but when I click on them, only the title and date/time are displayed to the right of the calendar: None of the event details, or the direct link to the record, show up. Instead, all I get is a spinning wheel. I can't figure out how this one table differs from all the others...