RCTObjectEditor123d, Pathmaker, Ridemaker. The object editor is still pretty functional. Pathmaker can be stubborn, and Ridemaker is full on hit or miss.
@OddmentsAlchemyLab -- do you possibly have links to these? Can't seem to find them after a brief google search.
How Do I Make Custom Scenery? What Programs Should I use
in Custom Content
Posted
@OddmentsAlchemyLab -- do you possibly have links to these? Can't seem to find them after a brief google search.