ImageJ bug: macro error using NeurphologyJ plugin

Hi, I am trying to use the interactive version of the NeurphologyJ plugin for ImageJ found at this website:

I cannot get the attachment points and endpoints to be generated; I get a value of 1 for both in a summary table(attached).

I also saw no green dots (=attachment and endpoints) in my final composite image and got a macro error (attached).

I’ve also attached a debug log (attached).

Does anyone know how to fix this?

Many thanks!!

debug log|690x349