Sergey

You also have to add the name of your node class into this file `sverchok/index.md`

It's strange that the error points into the wrong line. Probably you edited the code and did not reload Sverchok. ```py if self.obj_name and bpy.data.objects.get(self.obj_name): self.get_curve(self.obj_name) ``` This strings are...

Do you mean information about curves does not get into the json file during export into json?

Could you share the JSON file to see whether the problem is in export or in import?

Actually I can't see the source of the problem looking at your code snippets. Could you share whole code of your node or create pull request so I can test...

The node does not consider input edges as curves or polylines. Input edges can be connected any way with each other for the algorithm it does not matter. Probably if...

It is not the option which you are looking for? 

> What if you accidentally press the "Update all trees" button - it will freeze or even crash Blender, especially in my case with so many and heavy trees. It's...

I don't think this can be catched because it should return different values dependently on `sv_draft` mode of a tree. It seems solution can be to replace `self.prop_name` on change...

`self.node` is expensive