> Thanks for that, Dan, and also to Sailesh for the suggested workaround.
> I'll look into upgrading the relevant zope packages as the best answer.
That's not a good idea. If you upgrade packages willy-nilly, you'll get
version conflicts. Stick to the tested known-good sets unless you really
know what you're doing (or you're trying to help us test + develop new
Author of `Professional Plone Development`, a book for developers who
want to work with Plone. See http://martinaspeli.net/plone-book
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