Hello,
one of my clients (a friend whose website I help maintain) upgraded his WP to 3.2.1 recently. He also upgraded amr ical events calendar (free version) plugin to 4.0.20. At that point the calendars stopped working on the page and in sidebar.
Here's the page: http://www.markgrowden.org/tour
What I've tried: disabling other plugins, reinstalling the amr ical plugin, pasting the shortcode into other WP sites. The shortcode worked in other sites, so the problem is not likely to be with the feed or the shortcode.
I tried adding ?debug to the URL, but don't really understand the data.
Please help.