Errors on update to from 2.3 to 2.8.18

Software Update The following error occurred: ALTER TABLE perch2_pages ADD pageTemplate CHAR(255) NOT NULL DEFAULT '' AFTER pageAttributeTemplate SQLSTATE[42S22]: Column not found: 1054 Unknown column 'pageAttributeTemplate' in 'perch2_pages' The following error occurred: ALTER TABLE perch2_pages ADD templateID INT(10) UNSIGNED NOT NULL DEFAULT '0' AFTER pageTemplate SQLSTATE[42S22]: Column not found: 1054 Unknown column 'pageTemplate' in 'perch2_pages' The following error occurred: ALTER TABLE perch2_pages ADD pageSubpageTemplates VARCHAR(255) NOT NULL DEFAULT '' AFTER templateID SQLSTATE[42S22]: Column not found: 1054 Unknown column 'templateID' in 'perch2_pages' The following error occurred: ALTER TABLE perch2_pages ADD pageCollections VARCHAR(255) NOT NULL DEFAULT '' AFTER pageSubpageTemplates SQLSTATE[42S22]: Column not found: 1054 Unknown column 'pageSubpageTemplates' in 'perch2_pages' The following error occurred: ALTER TABLE perch2_categories CHANGE catDisplayPath catDisplayPath CHAR(255) NOT NULL DEFAULT '' SQLSTATE[42S02]: Base table or view not found: 1146 Table 'accolajoomla.perch2_categories' doesn't exist