Wing Tunnel Grading Component Trying to Sub-Divide by 0?

Hi all,

I am trying to use Butterfly for the first time and I have run into an issue with the Wing Tunnel Grading component where it is stating the box is “attempting to sub-divide by 0” Unless I am missing something, nothing within the script is asking for this component to sub-divide by 0?

I can’t seem to upload the script due to the memory restrictions