Dear users, we migrated a zope application from Zope 2.6.1 to Zope 2.9.4 by copying the Data.fs file to the new installation. given below is the trace. can anyone suggest what is the problem and corrective measures. we r not able to understand whether the error occurs at mytestflow or at index object. pls clarify. thanks and regards -yogeen 2006-09-12T16:38:47 ERROR Zope.SiteErrorLog http://mywebsite.com:8080/xxx/yyy/ll/ll_start Traceback (innermost last): Module ZPublisher.Publish, line 115, in publish Module ZPublisher.mapply, line 88, in mapply Module ZPublisher.Publish, line 41, in call_object Module OFS.DTMLMethod, line 144, in __call__ - <DTMLMethod at /xxx/yyy/ll/ll_start> - URL: http://mywebsite.com:8080/xxx/yyy/ll/ll_start/manage_main - Physical Path: /xxx/yyy/ll/ll_start Module DocumentTemplate.DT_String, line 476, in __call__ Module DocumentTemplate.DT_Let, line 76, in render Module DocumentTemplate.DT_Let, line 76, in render Module DocumentTemplate.DT_Let, line 75, in render Module DocumentTemplate.DT_Util, line 196, in eval - __traceback_info__: mytestflow Module <string>, line 1, in <expression> Module Products.OpenFlow.openflow, line 379, in addInstance Module Products.OpenFlow.process, line 144, in addInstance Module Products.OpenFlow.instance, line 41, in addInstance Module Products.OpenFlow.instance, line 68, in manage_addInstance Module Products.OpenFlow.instance, line 57, in safeSetObject Module Products.BTreeFolder2.BTreeFolder2, line 446, in _setObject Module zope.event, line 23, in notify Module zope.app.event.dispatching, line 66, in dispatch Module zope.component, line 181, in subscribers Module zope.component.site, line 89, in subscribers Module zope.interface.adapter, line 481, in subscribers Module zope.app.event.objectevent, line 192, in objectEventNotify Module zope.component, line 181, in subscribers Module zope.component.site, line 89, in subscribers Module zope.interface.adapter, line 481, in subscribers Module OFS.subscribers, line 114, in dispatchObjectMovedEvent Module OFS.subscribers, line 137, in callManageAfterAdd Module Products.ZCatalog.CatalogPathAwareness, line 42, in manage_afterAdd Module Products.ZCatalog.CatalogPathAwareness, line 99, in index_object Module Products.ZCatalog.ZCatalog, line 567, in catalog_object Module Products.ZCatalog.Catalog, line 360, in catalogObject Module Products.PluginIndexes.PathIndex.PathIndex, line 124, in index_object AttributeError: _length __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com