I have eight events under my "Manage Events" Tab on Civi. Three of them are upcoming, but five of them are left over from 2012. When I try to put an end date to the event, so they will be cleared from my this page, but not deleted, I am given this error blocking message:
"Sorry an error occurred We can't load the requested web page. This page requires cookies to be enabled in your browser settings. Please check this setting and enable cookies (if they are not enabled). Then try again. If this error persists, contact the site administrator for assistance.
Site Administrators: This error may indicate that users are accessing this page using a domain or URL other than the configured Base URL. EXAMPLE: Base URL is http://example.org, but some users are accessing the page via http://www.example.org or a domain alias like http://myotherexample.org.
Error type: Could not find a valid session key."