I used the subscription url for icalendar feed on my ical so that cards with due dates would show up as events on my ical. It worked fine for a long time, but now all of the sudden it doesn't sync, it just adds the card with the due date over and over again. So instead of one event per card, I end up with 160 (and counting) events all occuring at the same time on my ical.
I didn't change any settings on my end. Any ideas on why this has gone haywire or how to fix it?