If I change any setting value after installation i get the following error. I love this plugin and want to getting working--it is the best by far. Please help
Fatal error: Ai1ec_Settings::get_instance() [ai1ec-settings.get-instance]: The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "Ai1ec_Settings" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition in /home/markgcap/public_html/gravitysailor.com/wp-content/plugins/all-in-one-event-calendar/app/model/class-ai1ec-settings.php on line 242
http://wordpress.org/extend/plugins/all-in-one-event-calendar/