Hi,
I'm using WP-dTree 3.5 for pages and categories on http://www.worcestershirebus.info
The site contains 23 pages, only 12 of which I wanted to display in navigation.
WP-dTree pages widget was working for this then yesterday, it started only showing 4 links in the pages widget, and not 12.
I removed the sidebar widget, and replaced it, emptied caches on 4 browsers and tried again but 8 pages were missing.
The WP-dTree categories widget was still perfect, however, compressing 331 categories into 7 top level links.
I found the solution but thought it was best to post here in case others have the same problem.