There is a strange error, which is documented on the TestPageForRenamingThingy page. The following error occurs after specifying a new name and pressing return:
CopyError
Sorry, a site error occurred.
Traceback (innermost last):
* Module ZPublisher.Publish, line 202, in publish_module_standard
* Module ZPublisher.Publish, line 150, in publish
* Module Zope2.App.startup, line 252, in __call__
* Module ZPublisher.Publish, line 119, in publish
* Module ZPublisher.mapply, line 88, in mapply
* Module ZPublisher.Publish, line 42, in call_object
* Module Products.ZWiki.Editing, line 526, in rename
* Module Products.ZWiki.Editing, line 572, in changeIdCarefully
* Module OFS.CopySupport, line 345, in manage_renameObject
CopyError
... --swiesebach, Wed, 17 Feb 2010 02:03:21 -0800 reply
Name: '#1466 Renaming fails in (my instalaltion of) Zope 2.11.4 and Zwiki 2.0b1 an' => '#1466 Renaming fails in (my installation of) Zope 2.11.4 and Zwiki 2.0b1'
... --swiesebach, Wed, 17 Feb 2010 02:24:25 -0800 reply
Status: open => closed
Fixed, when enabling the "Copy or Move" permission in the Security properties of your site in the Zope Management Console.