Error when upgrading mahara from 1.8.2 to 15.04

Reported from public

Error when upgrading from 1.8.2 to 15.04

[WAR] 53 (lib/errors.php:747) Failed to get a recordset: postgres8 error: [-1: ERROR: column "path" does not exist
LINE 4: WHERE path LIKE '%/49354/%' OR path LIKE '%/3846...
                          ^] in adodb_throw(
            SELECT DISTINCT id
            FROM "artefact"
            WHERE path LIKE '%/49354/%' OR path LIKE '%/3846/%' OR path LIKE '%/68/%' OR path LIKE '%/67/%' OR path LIKE '%/16/%' OR path LIKE '%/15/%' OR path LIKE '%/77/%'
            ORDER BY id, )
Command was:
            SELECT DISTINCT id
            FROM "artefact"
            WHERE path LIKE '%/49354/%' OR path LIKE '%/3846/%' OR path LIKE '%/68/%' OR path LIKE '%/67/%' OR path LIKE '%/16/%' OR path LIKE '%/15/%' OR path LIKE '%/77/%'
            ORDER BY id
Call stack (most recent first):
log_message("Failed to get a recordset: postgres8 error: [-1: E...", 8, true, true) at /var/www/mahara/lib/errors.php:97
log_warn("Failed to get a recordset: postgres8 error: [-1: E...") at /var/www/mahara/lib/errors.php:747
SQLException->__construct("Failed to get a recordset: postgres8 error: [-1: E...") at /var/www/mahara/lib/dml.php:847
get_column_sql(" SELECT DISTINCT id FROM {...") at /var/www/mahara/artefact/lib.php:1789
artefact_get_descendants(array(size 7)) at /var/www/mahara/artefact/lib.php:1295
ArtefactType::update_locked("3") at /var/www/mahara/lib/db/upgrade.php:3118
xmldb_core_upgrade("2013101410") at /var/www/mahara/lib/upgrade.php:359
upgrade_core(object(stdClass)) at /var/www/mahara/admin/upgrade.json.php:86
Performing upgrades...

Component or plugin From version To version Information
core 1.8.2 15.04.0  Failed to get a recordset: postgres8 error: [-1: ERROR: column "path" does not exist LINE 4: WHERE path LIKE '%/49354/%' OR path LIKE '%/3846... ^] in adodb_throw( SELECT DISTINCT id FROM "artefact" WHERE path LIKE '%/49354/%' OR path LIKE '%/3846/%' OR path LIKE '%/68/%' OR path LIKE '%/67/%' OR path LIKE '%/16/%' OR path LIKE '%/15/%' OR path LIKE '%/77/%' ORDER BY id, ) Command was: SELECT DISTINCT id FROM "artefact" WHERE path LIKE '%/49354/%' OR path LIKE '%/3846/%' OR path LIKE '%/68/%' OR path LIKE '%/67/%' OR path LIKE '%/16/%' OR path LIKE '%/15/%' OR path LIKE '%/77/%' ORDER BY id
Call stack (most recent first):
get_column_sql(" SELECT DISTINCT id FROM {...") at /var/www/mahara/artefact/lib.php:1789
artefact_get_descendants(array(size 7)) at /var/www/mahara/artefact/lib.php:1295
ArtefactType::update_locked("3") at /var/www/mahara/lib/db/upgrade.php:3118
xmldb_core_upgrade("2013101410") at /var/www/mahara/lib/upgrade.php:359
upgrade_core(object(stdClass)) at /var/www/mahara/admin/upgrade.json.php:86