Hi I am trying to use ZTopics to create a visual hierarchy. I've got ZTopics installed ok but I am having problems with using them. If I create a top level ZTopic all is well and the ztopic will filter my catalog fine. However, if I try to create a hierarchy -even if only one level deep, I get the following error. Error Type: AttributeError Error Value: Vocabulary Traceback (innermost last): File /usr/local/Zope-2.2.4b1-src/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /usr/local/Zope-2.2.4b1-src/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/Zope-2.2.4b1-src/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File /usr/local/Zope-2.2.4b1-src/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/Zope-2.2.4b1-src/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: index_html) File /usr/local/Zope-2.2.4b1-src/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: index_html) File /usr/local/Zope-2.2.4b1-src/lib/python/OFS/DTMLMethod.py, line 172, in __call__ (Object: index_html) File /usr/local/Zope-2.2.4b1-src/lib/python/DocumentTemplate/DT_String.py, line 528, in __call__ (Object: index_html) File /usr/local/Zope-2.2.4b1-src/lib/python/Products/ZTopic/Topic.py, line 180, in contents (Object: Traversable) File /usr/local/Zope-2.2.4b1-src/lib/python/Products/ZTopic/Topic.py, line 228, in _contentsSet (Object: Traversable) File /usr/local/Zope-2.2.4b1-src/lib/python/SearchIndex/UnTextIndex.py, line 401, in _apply_index File /usr/local/Zope-2.2.4b1-src/lib/python/SearchIndex/UnTextIndex.py, line 476, in query File /usr/local/Zope-2.2.4b1-src/lib/python/SearchIndex/UnTextIndex.py, line 196, in getLexicon AttributeError: (see above) I haven't a clue if the problem is with ZTopics or the lexicon stuff within zope. Anyone know what's going on here? umesh