MapMagic 2 Splines Nodes Issue

I added all the mapmagic2 module.(Objects\Biomes\Splines) When I tried the link like the wiki tutorial,（/wikis/Batch/Splines） The link line is red then disappeared. Then I open demo/tutorial.screen to view it, The two nodes in splines simplegraph splines are linked, although they have different colors, But when I unlink them, I can't link them anymore.

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Steps to reproduce:

  1. Open demo/Tutorial Splines.screen,
  2. Unlink INTERLINK from PATHFINDING
  3. Try to link INTERLINK to PATHFINDING

Expected result: link INTERLINK to PATHFINDING

Actual result: The link line is red then disappeared.Unable to link INTERLINK to PATHFINDING