Just FYI. I recently used ver 1.0.21 for the transportation files and discovered that files are now named 2009 while topo process still expects 2008. A simple work around is to download the files, and manually rename before continuing.
Also if you only have a single contour file, don't check "Combine..." as everything gets deleted except for 2 .prj files.
Quite a handy tool though.