[Zope] 2.2.0 and Membership ... NoGo

Dunno what changed, but in 2.2.0b4 I could use Membership w/the latest ZPatterns just fine. In 2.2.0 when I try to add one, I get: "keyword redefined" errors. -- Do not meddle in the affairs of sysadmins, for they are easy to annoy, and have the root password.