Customer Custom Fields - possible missing column 2.0.1.1

Great work on new facilities.

I got an error when saving a Customer Custom Field when setting the 'required' checkbox for a Customer Group.

2015-02-02 11:50:47 - PHP Notice: Error: Unknown column 'required' in 'field list'<br />Error No: 1054<br />INSERT INTO oc_custom_field_customer_group SET custom_field_id = '1', customer_group_id = '8', required = '1' in S:\xampp\htdocs\outlet-store\system\library\db\mysqli.php on line 40

On checking with myphp, there was no column 'required' in oc_custom_field_customer_group. I added one and this error goes away (and the field appears on account forms).

I'm running on XAMPP using a database converted by a an upgrade script from 1.5.6.4 which itself was an upgrade from 1.4.7 so not sure if this is a 'shot-in-own-foot'. The excellent script is the easily found one by Pekka Mansika - http://pm-netti.com so I'll alert them as well.

I'm rewriting a mod which adds a tax code to the customer account (Italian Codice Fiscale) and discovered that custom fields will do the job for me (if I can find a way to validate the field).