Update to 1.8.4 and content regions not showing in admin

I'm upgrading a site to Perch 2 and have just updated to Perch 1.8.4 before I carry out the Perch 1 -> 2 upgrade. My content regions are still present in the database and on the public site but they aren't displayed in admin. In the admin I get the "No Content Yet?" message even though page assignments are listed. Clicking on a page assignment link gives "Sorry, there's currently no content available based on that filter"

I get this output when PERCH_DEBUG is turned on

DIAGNOSTICS:
SELECT * 
FROM perch_users 
WHERE userEnabled='1' 
AND userID=1
AND userHash='5c9e3afafe161bdcccce31f1cbb8f372'
LIMIT 1
UPDATE perch_users SET userHash = '1307ac0282e5a99e5e3ffed0caabfd27' WHERE userID = 1
SELECT settingID, settingValue FROM perch_settings
SELECT contentID, contentKey, contentPage, contentNew, contentOrder, contentTemplate, contentOptions
FROM perch_contentItems
WHERE 1=1 
Invalid query: Unknown column 'contentOrder' in 'field list'
SELECT DISTINCT contentPage
FROM perch_contentItems
ORDER BY contentPage ASC

I should have a contentOrder column in my database? Checking the database, my dev version does have this but the live site database does not. Any suggestions?

Drop table and recreate it from dev version??