[Plugin: All-in-One Event Calendar] export from one calendar and import to another

I have an install of the all-in-one event calendar working on one site and I want to take that calendar feed and add it to another website also running all-in-one event calendar.

i tried both the link for “subscribe” and the link for “subscribe in google calendar” but the ICS import settings didn’t like either url.

So what do I use?

http://wordpress.org/extend/plugins/all-in-one-event-calendar/