Hello.
My algorithm worked 2 times and then - just refused.
On the screen attached, there are 2 results of nesting in the red frame.
I wonder whether it is possible to modify the settings so that there is no mess in the numbering sequence? Nesting is very simple here - just to move the profiles closer one to another, no reason to jump between numbers.
Any ideas?
Laser.zip (8.9 MB)
need the gh file, you have attached the Rhino file alone
by the way, what you see as “numbering” are just meaningless curves for gh, so they will not be sorted as you wish by using a Nesting algorithm
OpenNest.gh (13.3 KB)
The numbering is done by .gh 
I think I know what is the reason: the next series of curves consists of too many points. GH is not good enough to perform this task. Maybe using bounding boxes should help.
