How do I register a marker interface so it is visible in Plones's ZMI?

Posted by joeforker on Stack Overflow See other posts from Stack Overflow or by joeforker
Published on 2010-05-19T18:08:06Z Indexed on 2010/05/19 18:10 UTC
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zope

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plone

I would like to register a marker interface so I can add it to objects in the ZMI. My product's configure.zcml contains:

<interface interface=".interfaces.IMarkerInterface" />

and, after reinstalling, the interface shows up in the list of available interfaces. But if I try to add it to an object in the ZMI I get a ComponentLookupError. What's missing?

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