I haven't been able to run least cost-paths in ArcMap since 9.3. As I recall, there were problems generating the anisotopic part. Has anyone run them successfully in the newest version?
this is an old thread....but I have never had problems with cost path analysis. Anyone that does has usually broken one of the grid location/naming rules, not dealt with nodata areas properly, and a myriad of little specific-to-situation issues.
Beth apparently got this working later: