OK so heres the situation with this...
With the original gcode you uploaded, I can replicate the infinite loop error but I cant find the cause yet. All my new tests which use arcs and inches seem to work perfectly fine.
I think that this issue where adobe illustrator is used to create a PCB is a very rare one but if you get other similar problems, let me know.
I have not given up the search but I also intend to integrate a parser library with AL at some point, and this will fix the problem indirectly anyway. If possible, use 0.8.2 instead for files like this.
Report problems here