I have a webtree as such:

<ignav:UltraWebTree ID="UltraWebTree1" runat="server" DataSourceID="xmlTreeSource" Expandable="False" ExpandImagesVisible="False" Indentation="10" InitialExpandDepth="1">

which displays correctly until i run some code on a postback that updates the data in xmlTreeSource. The page comes back with the tree collapsed and since I don't allow it to be expanded, there's no way to see the next level of data. Why is it collapsing?

thanks.