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
The backup feature is broken, and don't expect it to be fixed very soon.
To make backups, use the export feature of phpMyAdmin, or whatever is generally used for making backups of MySQL databases.
