[Zope] Forum product

Hi! I need a forum in my plone site which has the following installation: - Zope 2.7.8 - Plone 2.1.2 - Python 2.3.5 - LinguaPlone 0.9 I have tried the following ones with no succeed: - CMFBoard doesn't work with Plone 2.1.x - PloneBoard works only with Zope 2.8 - SimpleForum works correctly but it's too simple. - CMFForum gives me an error when trying to add it. (traceback attached) Thanks for your attention Cris.