[Zope] Newbie Question: Creating a ZClass

[Ashley Lloyd]

I've tried two or three tutorials on Creating a ZClass, and seem to get the 
same type of error every time.

Following the example in The Zope Book, Ch.14 
(http://www.zope.org/Documentation/Books/ZopeBook/current/CustomZopeObjects.stx)

when I get to the part "Go ahead and select ZooExhibit from the add list and 
create a new Exhibit with the id 'FangedRabbits'. ", I get the following 
error after clicking Add:
Error Type: NameError
Error Value: global name 'ZooExhibit' is not defined

Can anyone help with this? I've looked at posts in the past that have asked 
the same, but there doesn't seem to be anything that helps.

Thanks very much

Ashley

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