This WAS working at one point, not sure which mod I updated that broke it, but this was on planet crucible(if that matters)

The mod Disco Science (2.1.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event DiscoScience::on_tick (ID 0)
DiscoScience/utils/colorMath.lua:16: attempt to perform arithmetic on field 'r' (a nil value)
stack traceback:
DiscoScience/utils/colorMath.lua:16: in function 'lerpColor'
DiscoScience/utils/colorMath.lua:27: in function 'loopInterpolate'
DiscoScience/utils/colorMath.lua:51: in function 'colorForLab'
DiscoScience/core/labColoring.lua:70: in function 'updateRenderer'
DiscoScience/core/labColoring.lua:105: in function 'updateRenderers'
DiscoScience/control.lua:118: in function <DiscoScience/control.lua:116>

Thanks for the report. Can you provide the list of mods you were using when the error occurred?

And ideally a saved game that shows the error

I'm so very sorry I didn't get your reply notification.

My list of mods is pretty big.. Aside from a bunch of mostly visual mods I'm running a lot of Planetaris mods (Hyaryion, Arig, Crucible, etc).

I actually had this crash happen just again. After easily a hundred hours of it not happening it just happened again. Error is identical to the last one.

Is there an easy way to provide a complete list of mods currently used?

So I just had it happen again. As soon as I turned on a Crucible science it crashed. I was on Arig planet when I switched, not sure if that makes any difference at all or not.