I have created a graph that uses rhythm package CurtainGrid.AddGridLineByPoint to add gridlines to a curtain wall according to some logic , and I get this error which is not very usefull . Any ideas will be highly appriciated . !
I am attaching an image of the graph , the graph and a revit file (2019) with one curtain wall.
one curtain wall.rvt (1.7 MB)
CW_ADD_H_GRID.dyn (16.1 KB)