A last question I think of general interest about this matter, that I think to have understood re-reading Amagi's tutorial:
UseParkedPlanes DOES NOT HAVE A 0 AND 1 SETTING!
Just TRUE (that's to say 1, that's to say ON) if you ADD THE LINE TO YOUR DGen option!
This explains also why it caused error when I wrote UseParkedPlanes=0, DGen read only UseParkedPlanes, not =0.
Ardisco, colpisco, meninfischio ("I dare, hit and do not care about it!" - Written on a SM 79 "Sparviero" during Spain civil war)