Triangulation Tool

Hello,

I have been using Rhino vault on Rhino - 8 and have been trying to explore the tool.
Whenever I try the triangulation tool the file just crashes.
I tried doing it differently like by changing the triangulation Length to 1,5,10,100 ( Because I am working in millimeters ) but its the same, gets stuck the moment I hit Spacebar.

Can you help me tackle this - is there something I have been doing Wrong ?

The image has red lines as outer boundaries, Blue lines an the inner ones and purple ones are the guides. I just numbered them just to show the selection sequence as well ( tried doing it with these as closed curves but still failed )

hi,

will try to replicate and check.
does the problem occur with all geometries or just this specific one?

tom