I play the interstellar progression overhaul and get this error:

Failed to load mods: Error while loading entity prototype "pre-heated-heat-exchanger" (boiler): FluidBox minimum_temperature and maximum_temperature have been removed. Similar properties have been added to most machine prototypes.

At ROOT.boiler.pre-heated-heat-exchanger.fluid_box
Modifications: Pre-Heated Exchanger › Planetaris: dyes › Maraxsis › Panglia

I play with KS2SO and got a similar error:
Fajled to load mods: Error while loading entity prototype "pre-heated-heat-exchanger” (boiler): FluidBox minimum. temperature and maximum. temperature have been removed. Similar properties have been added to most machine prototypes.
At ROOTboilerpre-heated-heat-exchangerluid. box
Modifications: Pre-Heated Exchanger Krastorio 2

I guess we can just remove the min max temp from the mod for a temp fix ?

removing entity.fluid_box.maximum_temperature = TARGET_TEMPERATURE makes it load

Thanks for the report. I'll push out an update to this shortly. Always fun when moddingAPI gets removed ^^

Hopefully now fixed. Please report any persisting issues.

This change was part of a fix to the preexisting fluid mixing problems.