Changing the category’s name causes crash : “the entire plugin depends on the cat name “Events” to function”
http://wordpress.org/support/topic/378543?replies=2
Same problem here !
I’v added 2 events at first and everything was ok, but when I’ve added the third, all my pages got Error 404.
Deleting the event doesn’t solve the problem, I had to deactivate the plugin.
