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
Tiki doesn't have "per user" permissions. What you could do is create a user group which has all users except that user you wish to exclude and then make the page/s viewable only by that user group. Users can belong to more than one user group.
