Vmuikit has a bug with "Add/Edit shipment address " (virtuemart Account Maintainence link - index.php?option=com_virtuemart&view=user&layout=edit)
Edit works, no problem.
Edit existing address and change Address Nickname, this creates a new shipping address. No Problem.
Here is the problem:
Click "Add/Edit shipment address " and fill in blank form, address does not save. Also cannot click "cancel" -> message "required field is missing"