I must have a bug somewhere....I am using 2.06 and when creating roads the user guide says I can use lines, arcs and splines. Well, lines work, arcs and splines do not work.....

Then, once road is created, I select the road (says Architerra Road in Info Box) then select the Road Profiler and it says I cannot use this tool for that part...

Huh? What am I supposed to use then?

Unfortunately the user manual is wrong: in the current version you cannot use splines but only lines, polylines and arcs.

Once you generated the road, by clicking on the excavation icon, you can still change some attributes of the road by usign the Road Tool icon.
Probably you have selected something of wrong...

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Fabrizio