Another way to import poly line data from other software: make a Poly node and put it in the Viewer. Right-click in the Viewer and point to Polygon1:PolyLine > Import > Import Nuke Shapes…
I can't guarantee that it will work either, though, because, as Michael said, I think that importer expects data from the old Bezier node, not the RotoPaint node that replaced it. My understanding is that you can't get Nuke shape data into Silhouette or Mocha right now, either. I will refrain from speculating on the reason for that.

- Untitled.png (62.19 KiB) Viewed 2428 times