The TIGER tileset in TopoFusion Pro will no longer be able to download new tiles, since the service has been discontinued as of this week, June 1st, 2010. Any tiles already downloaded in your map cache will always be available, but no new ones will download. We will update the next version of TopoFusion to not attempt to download new TIGER maps so that the "TopoFusion is having trouble contacting..." error does not occur when in TIGER mode.
More info on the server shut down, and promise of a new mapping service in early 2011:
http://www.census.gov/geo/www/tigerms_redir.htmlWe will certainly watch for that service and look into incorporating it into a future version of TopoFusion. In the mean time, our next version features much higher quality and more recent road data, in the form of maps from the Open Street Maps project:
http://openstreet.orgThe beta should be released as a full version soon. Thanks!