Unable to update My Info

Just updated to the latest build, and thankfully it's fixed a lot of issues (dashboard not working for admins, photo upload not working for users, etc. etc.) however there's still one bug getting in the way.

When a user attempts to update their My Info, this error appears, I've tried in IE7, IE8 and Firefox 11.

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; OfficeLiveConnector.1.3; OfficeLivePatch.0.0; .NET4.0C; InfoPath.2; Tui Travel Plc - UKISD; Specialist Holidays Group)
Timestamp: Thu, 12 Apr 2012 15:19:15 UTC

Message: Object required
Line: 1554
Char: 3
Code: 0
URI: http://selfserve.sub.ourdomain.com/js/UserAttributeDetails.js

Message: Object required
Line: 1554
Char: 3
Code: 0
URI: http://selfserve.sub.ourdomain.com/js/UserAttributeDetails.js

Help please.