I'm attempting to get this plugin to work again. I've had to let it go for a while. Now I'm back at it today and still frustrated.
In an attempt to use the Facebook integration, I decided I'd try to use a1ec to create an event. When I publish the event, I get an error from Facebook saying: "Something went wrong while creating the event on Facebook.
This is the error message: (#100) Invalid parameter"
With the iCal/ICS & Google feeds, they don't work either. Google tells me the feed does not contain proper ICS or Google formatting. iCal tells me: "The data downloaded from webcal://jodywhitesides.com/?plugin=all-in-one-event-calendar&controller=ai1ec_exporter_controller&action=export_events&cb=1007397306 isn’t valid."
So none of these three things work.