Hi there, The behavior of ZCTextIndex was intended to be able to index strings, but also lists of strings. The list of strings construction is useful in case one wants to index multiple pieces of text without generating patterns that aren't really there: ['foo bar', 'qux baz'] but we don't want 'bar qux' to be a pattern. Zope 2.7.7 appears to break this behavior due to a change in index_object in Products/ZCTextIndex/ZCTextIndex.py, and only accepts strings, not lists of strings anymore. The underlying indexing code is however capable of dealing with lists of strings. This problem has evidentially been broken and fixed on the Zope 2.8 branch, but remains on the Zope 2.7 branch. This comment is also present on Zope 2.8: Enter the document with the specified documentId in the index under the terms extracted from the indexed text attributes, each of which should yield either a string or a list of strings Are there plans for a Zope 2.7.8 that fixes this? The Zope 2.7 branch in CVS still appears to be broken. Regards, Martijn