[Zope] two different trees in one dtml method

Hey all, I am trying to create two different trees in one DTML Method, and I am failing miserably. The first tree works fine, but the second gives an error message: 'tuple' object has no attribute 'append'. If I comment out the first tree, the second tree will work. I have a folder called trouble. Inside the folder are two folders - answers and questions. Inside of the index_html for trouble I have the following: <!--#tree answers--> <SPAN CLASS="tree"> <!--#var title--> </SPAN> <!--#/tree--> <!--#tree questions--> <SPAN CLASS="tree"> <!--#var title--> </SPAN> <!--#/tree--> It is not necessary for me to be able to do this, but any help would be appreciated. Clarence