Apparently prototypes don’t permit you to add the PlaceMarker trait and I don’t see why. Something funny happens at line 607 of PieceDefiner.java:
gpidSupport is null which results in a NullPointerException on line 321 of PlaceMarker.java
On a separate note, can someone point me to the discussion on GpIds? I was away when that was discussed and I could never catch up to that. I don’t think I understand what GpIds were for.
Replace with other cannot be added either, but that might be a good thing as it wouldn’t make a whole lot of sense for Prototypes.