[Setup] Working Copy Support (Iterate) 1.2.3 doesn't work with plone 3.3 RC 4 (rc 5)

[Mirto Silvio Busico]

Hi all,
When I try to create a new plone instance an add the Working Copy 
Support (Iterate) 1.2.3 product it doesn't work: no "create new copy" 
appears in state menu

In the Add/Remove Products panel, between the installed products I see

Working Copy Support (Iterate) 1.2.3

    * Adds working copy support (aka. in-place staging) to Plone.
    * Product Description
      <http://localhost:7080/test1/portal_quickinstaller/prefs_install_product_readme?filereadme=plone.app.iterate>

    * Install log
      <http://localhost:7080/test1/portal_quickinstaller/plone.app.iterate/prefs_installed_product_overview>

    * This product has been upgraded. Old profile version was *unknown*.
      New profile version is *1.2.3*. There is no upgrade procedure
      defined for this add-on. Please consult the product documentation
      for upgrade information, or contact the product author.


I installed Plone with the 3.3 RC 4 unified installer.
I tried also to get the latest versions using, in the buildout.cfg, the 
line:

extends = http://dist.plone.org/release/3.3rc5/versions.cfg

What can I do?

Thanks
    Mirto
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