The lexicon was getting wrapped before storing in ZODB. Fixed.

ZODB works around this situation, but it probably shouldn't.
AdaptableStorage doesn't allow it.

lib/python/Products/ZCTextIndex/ZCTextIndex.py

@@ -94,7 +94,7 @@ class ZCTextIndex(Persistent, Acquisition.Implicit, SimpleItem):
         else:
             self._index_factory = index_factory
 
-        self.index = self._index_factory(self.getLexicon())
+        self.index = self._index_factory(aq_base(self.getLexicon()))
 
     ## Private Methods ##