Plone 3.3rc3 breaks singing and dancing

[rafaelcrocha]

After upgrading my Plone from 3.2.1 to 3.3rc3 and S&D from 0.8.2 to
0.8.10 I am getting the following error trying to access any channel :
Any clue?

Traceback and result of PDB in thread

http://groups.google.com/group/singing-dancing/browse_thread/thread/39bb6e65f799d55e