Posts exists but are NOT Displayed

[deb8]

these are the latest entries in the error log. hope they help

(4739, 1327593778, 0, '83.235.191.63', '?http://macphalanx.dyndns.org/' [nofollow];, 'Σφάλμα βάσης δεδομένων: Unknown column ''spb.allowed_groups'' in ''field list''<br /><br />\r<br />      SELECT\r<br />         spb.id [nofollow]_block, spb.label, spb.type, spb.col, spb.row, spb.state,\r<br />         spb.force_view, spb.allowed_groups, spb.permission_type, spb.display,\r<br />         spb.display_custom, spb.style [nofollow], spp.variable, spp.value\r<br />      FROM smf_sp_blocks AS spb\r<br />         LEFT JOIN smf_sp_parameters AS spp ON (spp.id_block = spb.id [nofollow]_block)\r<br />      WHERE spb.state = 1\r<br />      ORDER BY spb.col, spb.row', '12dc7aa42b7c80aafb7b4bd1d64d004a', 'database', '/users/deb8/www/macphalanx/Sources/Subs-Portal.php', 346),
(4740, 1327593778, 0, '83.235.191.63', '?http://macphalanx.dyndns.org/' [nofollow];, '8: Undefined index: sitemap', '12dc7aa42b7c80aafb7b4bd1d64d004a', 'undefined_vars', '/users/deb8/www/macphalanx/Themes/default/Errors.template.php (body_below sub template - eval?)', 280);