So I get this message when I try to *browse* my table in catwalk:

> Fail to load object instance: coercing to Unicode: need string or buffer, 
> NoneType found

though I should tell you that my model is this:

class AddressBook(SQLObject):
    _fromDatabase = True
    _idName = "address_book_id"

... don't ask!

I can run select() and get() on the class just fine - it comes back
with the right data - and I can use catwalk to add records and view the
*structure*, just wondered what catwalk needed, should it be possible
to browse from catwalk when using _fromDatabase ?

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