The search index could not be updated. The site is misconfigured. Contact an administrator. SQLSTATE[42000]: Syntax error or access violation: 1064 unknown table 'tiki_main_67e2559f7089d' in delete request
Your Tiki is probably installed on an apache web server with mod_security installed, and with the SecFilterScanPOST filter set to On. If you search on: mod_security 404 POST, you will see that this is not an uncommon problem. Talk to the system administator of the server you are on about turning the filter off.