Failed to load mods: Error while running setup for entity prototype "radiation-wall" (wall): When next_upgrade is set entity mining result must not contain item product with "hidden" flag set. Mining results with no item products are allowed.

and then it requests i disable the following,

it only errors when this mod is enabled, i was using a different rad. mod Radiation Damage by valertron but it doesnt address the whole rad protection issue, so wanted to try your mod. that mod was also disabled while trying yours detail clearificaiton.

tuckez12 Radiation
water friendly walls fix
bobenemies
rampant arsenal fork firestorm
combat mech. overhaul
additional turret revived

I've attempted to replicate the bug you are facing but so far am unable to on my end.

These were the mods I had installed to try it out including their specific version:

[This Mod] | Version (1.1.1) | xxx
Additional turrets BY Beathoven | Version (0.1.61) | https://mods.factorio.com/mod/Additional-Turret-revived
Bob's Enemies BY Bobingabout | Version (2.1.0) | https://mods.factorio.com/mod/bobenemies
Bob's Functions Library mod BY Bobingabout | Version (2.1.0) | https://mods.factorio.com/mod/boblibrary
Combat mechanics overhaul BY Earendel | Version (0.7.2) | https://mods.factorio.com/mod/combat-mechanics-overhaul
Rampant Arsenal (Firestorm-Fork) BY Firestorm253 | Version (1.3.0) | https://mods.factorio.com/mod/RampantArsenalFork_Firestorm
Water-Friendly Walls Compatibility Fix BY Techjar | Version (2.1.0) | https://mods.factorio.com/mod/Water-Friendly-Walls-Fix

I also installed the other radiation mod you mentioned and got the expected incompatible error.

If possible could you send me your save file so I can replicate the code environment you are in?

Thx

hopefully this is good enough, i dont tend to share files so it took a bit to find something

https://limewire.com/d/1eMDw#eAu0PULyEJ

brace yourself, i run a very large mod list

By the looks fo it the issue seems to be because you have a different prototype named the exact same as my wall and when you remive the mod with that prototype and then use my mod, the game gets confused. It thinks that the wall cannot be mined since it is hidden but you already have some walls from the previous mod which the game will treat as my wall.

Therefore to potentially fix this, I renamed the radiation wall prototype to something more unique.

If it still crashes, I'd try to remove all current rad wall instances (both prototype and item) from your save by destroying them or something.

Hopefully this fixes it for you?

i will give it a shot, detail clearification, tho they are part of a mod, i have only really been using stone walls.

this is what i get after update.

Failed to load mods: Error while running setup for entity prototype "stkz-radiation-wall" (wall): When next_upgrade is set entity mining result must not contain item product with "hidden" flag set. Mining results with no item products are allowed.

and suggests i disable the following:
this mod
smooth platform walls
bobenemies
rampantarsenalfork_firestorm
combat mechanics overhaul
additional turrets
aai programmable vehicles