oh interesting, the mod was made at the beginning for mk2 and mk3 spidertrons.
The shortcut is for the experimental immolator spidertron active skill, which is a work in progress, sorry about that, i'm still learning a lot of things. Gonna try to make it not crash and add name and description at the next version.
looking over the error:
it's on this line: "for key, immolator in pairs(global.immolator) do"
which i thought i did fix on the last version but guess it still doesn't get initialized properly, so i will try to initialize again, which should fix it. But i'm at work right now, so i'm gonna fix it after i finish with work.