ANy idea on how to fix this
https://imgur.com/a/fJ39Qqo

Already posted here;
https://mods.factorio.com/mod/dark-matter-replicators-18/discussion/5ed7cdd915705f000db89cd0

Still have the same problem though

https://drive.google.com/file/d/1OuT1_1jAlX3oKAOeDaJGqMHA0EIt7vzw/view
my mod list

Same error here.
I'm not coder but a nil check stopped the error from appearing so at least i could play, works for now.

in process-actual-creation.lua at line 140 find

                if tech_icon[1].icon_size then
                    tech_icon[repl_data[#repl_data].icons].scale = tech_icon[1].icon_size / 32
                else
                    tech_icon[repl_data[#repl_data].icons].scale = 1
                end

and replace it with

            if tech_icon[1].icon_size and tech_icon[repl_data[#repl_data].icons] then
                if tech_icon[1].icon_size then
                    tech_icon[repl_data[#repl_data].icons].scale = tech_icon[1].icon_size / 32
                else
                    tech_icon[repl_data[#repl_data].icons].scale = 1
                end
            end

ty guys. Not sure why I didn't see this sooner

Wtf is a 'nil check'? Also, that line doesn't match in process-actual-creation.lua. I can't find anything like that, yet i'm having the same problem.

Found out the in game mod portal has the wrong version, i got the one from the google drive post in the other thread, and it had the matching lines. Made the changes and still no joy. Oh well.

After reading the thread meantioned by Allaya I downloaded the file posted by Honktown there. That gave me the error mentioned by Sleeeper, so I changed the file he described with the replacement he mentioned. I think the reason dogamusprime couldn't get his working is the code doesn't format correctly (my experience in general) so I formatted it like it needed to be and voila! The game will launch. Still can't load my save though, and I couldn't get the migrations folder working (I'm no coder) so I just deleted it, and now my save will load (though it complained saying not to do that). To that effect, I uploaded my zip after doing all this so anyone can download it below, or you can just repeat my steps mentioned above. Oh, and if your starting a new save you don't need to delete the migrations folder of course. Thanks to everyone mentioned above, I just threw it all together.

https://mega.nz/file/i2wAASBC#8RaiYk2rDdJI1EJ8g0aKdtQwtGITrzp3x_6VO2ot6D0

That worked absolutely perfectly!! It even worked on my old save! Thank you!

I plan to have an un-migrate file, as stupid as that sounds. I was going to migrate the names to something more "this-mod" specific, but it was more trouble than it'd be worth.

Updated, see what happens pls

Hi, I have a problem when uploading the mods and the error is | Error Modmanager.CPP: 1588: impossible to load the "dark-made-replicalors-18" mod. -Costs.lua: 87: Attept to concatenate local 'Ingredient_name' (A Nil Value)
Stack Traceback:
...- replicators-18 /prototypes/replicable/process-costs.lua: 87: in Main Chunk
[C]: in Function 'Require'
__Dark-Matter-Replicalors-18 /Data-Updates.lua: 45: in Main Chunk |

Hi, I have a problem when uploading the mods and the error is | Error Modmanager.CPP: 1588: impossible to load the "dark-made-replicalors-18" mod. -Costs.lua: 87: Attept to concatenate local 'Ingredient_name' (A Nil Value)
Stack Traceback:
...- replicators-18 /prototypes/replicable/process-costs.lua: 87: in Main Chunk
[C]: in Function 'Require'
__Dark-Matter-Replicalors-18 /Data-Updates.lua: 45: in Main Chunk |

I can take a look, but I'm going to lock this thread and make a new discussion for this. This one is nearly two years old.