Comment 2 for bug 910323

According to this thread [1] on the Italian Plone mailing list, the fix is to add 'five.intid' and 'zope.intid' in your buildout:

eggs =
    five.intid
    zope.intid
    collective.dancing

Furthermore you should pin five.intid to version 0.5.2:

[versions]
five.intid = 0.5.2

If these work for you, I'd be happy to see an updated extends file or a patch for collective.dancing itself that fixes the issue.

[1] http://translate.google.com/translate?sl=it&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&u=http%3A%2F%2Fplone-regional-forums.221720.n2.nabble.com%2Fproblemi-con-singing-amp-dancing-td7171369.html&act=url