1.8.4 version of Ai1EC, is also lead to page not found. some url rewriting problem
ex:if url sitepath/ai1ec_event/event-name/?instance_id=10(page not found)
but sitepath?ai1ec_event=event-name?instance_id=10 (leads to correct page)
this is the problem, you people can handle it and give proper solution .. other wise this plugin status would be broken
Thanks…