Charlie,
I downloaded and ran 1.16a. It works like a charm. No errors, no slowdown, no problems with the toolpath visibility button. I clicked it on and off many times. 1.16a ran as fast or better than 1.14a.
Thanks,
Donnie
Viewing post in Several issues with 1.15a
Fantastic, what a relief! I'm going to post a tutorial in the morning, I have some tutorial ideas sketched out for mostly just demonstrating the basics of using individual operations and then also a few things that employ a few operations used in combination. I'm all ears to suggestions if you are curious how to go about doing anything in particular.