New Customer 'Bug' in 1.3.2

Hi.

Having installed a lean version of the latest upgrade, i am faced with the following error when a new user account is created:

Call to undefined method Customer::getCustomerGroupId

Can anyone suggest a fix? Or am i doing something completely wrong

Thoughts and suggestions welcome
Thanks in advance

You upgraded from what version? Looks like you missed some files.

I originally had 1.2x. I discarded that and installed the 1.32 version but linked it to the database 1.2x was using. Would it be worth creating a new database? Or starting afresh and scrapping everything? (I am in the early stages of developing a store so no harm in doing so)

Thanks for your help