Strange issue with circle packing, suddenly lost slider functionality

Working on a circle packing project now, had several scripts from here on the old grasshopper forum open as well as a couple other sources.

All share a common slider for number of circles, slide up more appear, slide down, circles disappear. That worked fine but at some point yesterday it stopped across all scripts. Moving the sliders adds circles still but does not delete them and it just turns into an ugly mess as they multiply infinitely.

I closed, restarted, started fresh scripts, still the same problem. Any suggestions?