i've found the problem. somehow, mod was unsubscribed in steam, but it was available in mod list. i subscribed to mod again and problem fixed.

Is your version of UpgradePlus also up to date? Are you sure you have the workshop version and not a frozen local version?

I enabled every mod on that list except aequus's shop quotes (which has been set private) and killed BoC in a new world with a new character, the blacksmith spawned and worked fine. Does Blacksmith start working if you disable shop quotes?

yes, my tmodloader is up to date (v2025.4.3.0). i played with my friend around 2 weeks ago and npc werent broken
this is my mods, maybe it can help:
Calamity mod + Infernum, Wraith of the gods, loot swap
Fargo Souls, Fargo Souls DLC, Mutant Mod, Fargo Souls Extra
Snacther from AlchemistNPC
Boss Checklist
Recipe Browser
LuiAFK
Heart crytsal & Life fruit glow
Better boss health bar
1/10000 foxy jumpscare
Auto Trash
OreExcavator
Wing Slot Extra
Auto Fish
Auto Reforge
Subworld Library
Boss Cuursor
DPSExtreme
absoluteAquarian utilities
Magic Storage
Catalyzed Inferno
Catalyst Mod
Luminance
Aequus shop quotes
Max Stack Plus Extra
Begone Evil

Are you on the latest version of the mod? v1.0.10 was supposed to be a hotfix for a bug with calamity enabled that caused the Blacksmith's textbox to not show up.

did anyone had a problem where you are unable to talk with npc?

Based dev

wow thanks for taking the time to fix it!

Calamity strikes again! Sudden incompatibility with Calamity this time caused by them removing fabsol and his NPC from their mod entirely

Should be fixed now, thanks for reporting it.

hello, anyone have a problem with the mod? i dont play for a while, and when return, cant speak with the npc

tough tokens changes how many tokens are dropped from enemies
normally if an enemy drops a token, then an enemy with 10x it's stats drops 10x the tokens
with the config it's logarithmic, so the drop count gets harder and harder to increase

what does the "Though Tokens" do? i cant figure it out. i dont understand what "Tokens scale logarithmically instead of linearly" means.

I'm sorry I made a mistake. I was using the other blacksmith, not the one from the mod. I confused the two. Good thing is that it works. Thanks!

Clicking on Blacksmith should show two dialogue options: Upgrade or Close

When you click Upgrade it should show a UI just like the Goblin Tinkerer's, with a single slot and a reforge hammer icon, when you put a weapon/armor/accessory in the slot it should show a token price to upgrade it, and if you have enough tokens (or sleeves) then clicking the reforge hammer should upgrade it

I'm not sure if I'm missing a step or I'm dumb, but I cannot upgrade any weapons. All I see when I open the "shop" button on the blacksmith is the things he sells and nothing about upgrading. What should I do? I have tokens and the weapon both in my inventory and my hotbar but nothing has happened also.

Alright, I will look into it, thanks for letting me know.

No current way in-game, but you can raise the limit through code, see DJ Korean's question (& answers) on the last page

Is there a way to add infinite max level upgrade?

Pretty knew but im pretty sure the housing is valid as other npcs (some modded) have spawned and stay inside of some of the rooms. i could try making a completely separate room and waiting a bit to see if he spawns then

Are you sure the housing is valid? Blacksmith doesn't have any further requirements, just that at least 1 of 4 bosses are defeated (EoC, BoC, EoW, and Skeletron)

I just got Blacksmith to naturally spawn in a classic mode 1.4.4 test world with cheatsheet to quickly kill skeletron

so, i've beaten cthulu and skeletron plus i have space in my base for multiple people to arrive yet the blacksmith hasn't showed up, is there something im missing in the building reqs??

no, sadly
but there is a total weapon size config that goes down to 0

Is there a toggle to remove Size from things like guns and such. It's kinda overwhelming having a high level range weapon be so massive xD

putting it all together, lets see if i did it all right.

and it does!! thank you so much for the troubleshooting

it's fine lol, I didn't expect it either
.dll files are used a lot for library/api purposes so I'm guessing tML automatically read the dll, implemented whatever it saw, then rejected the newer duplicate assets

Appreciated! i was having the same issue, i didnt know if it was just rejecting the updated code or i did something wrong (can you tell i dont program lmao)

Okay I can't get any changes to ModConfig to stick, which is odd..
I think I found it, you just need to delete the UpgradePlus.dll file that appears in the extracted folder

it does not seem to work, the code saves but i cant raise the number higher than 255, something im missing by chance?

We will see, thanks a ton man!

You can extract the mod to tModloader/ModReader, then move the extracted folder to tModloader/ModSources, make the changes and then compile in the Develop Mods section in-game

I'm just not sure if you need visual studios to recompile the mod

I do not know how, but I will absolutely learn how to do this single thing. Thank you for letting me know!!

255 is the cap set in the code but not due to technical limits

If you know how to recompile a mod;
- the cap ranges are set in lines 85, 97, & 101 of ModConfig.cs
- bc of tML changes you might have to raise the version in build.txt for it to show
- the cap's technical limit is the integer limit (2.1~ billion) but the price for upgrades will get buggy long before then because it's also calculated in integers

code can be extracted in-game in the mod's description or downloaded from Github

Is there a way to go past 255?

cool mod.

UpgradePlus should be out for 1.4.4 now

UpgradePlus changes:
* Pickaxe mining speed has been fixed
* Blacksmith NPC no longer uses happiness mechanics (it never effected him) & some lines have been turned into normal messages

Elsewhere changes:
* The workshop description's changelog section now points to the TCF thread & steam's Change Notes to save space (if you don't know where Change Notes is: it's in the bar up top next to Discussions)
* The Github repo has changed names to fix a "typo" (in reality a namespace change i forgor), I don't know if that'll effect version 1.3's mod browser, & I can't test because their host has been down for at least 3 days

A patch is out for 1.4.3 it includes 2 bugfixes that were found in porting to 1.4.4:

* Bonus crit damage not being applied to the initial crit if you had both crit damage & crit rollover enabled
* The final roll of crit rollover was a guaranteed crit if the remaining chance was 51% or higher

uhh, from what I can tell both of those bugs have actually been around in some form since 1.3, but the former was mostly hidden by a different bug during 1.3

1.4.4 :)

Go to 1.4.4 yooo! :D

1.0.8 for 1.4.3 is out now:
> New config for logarithmic token drop scaling ( tokens * (1.1 - Log10(tokens)/10)
> Existing underpowered preset includes all stats now (wing, summon, c. damage), old underpowered mode is now a 4th preset that only has classic EU weapon stats (+mana cost, - defence)
> the 20 level hardmode toggle is replaced with 2 custom # inputs for HM & ML caps, hopefully this is the last time a change messes with ppl's config settings

will port to 1.4.4 eventually, 1.4.3 version is & will still be buildable from it's respective github branch just like 1.3 is

Yep, works perfectly! Thanks for the help.

can confirm, compact stack ("Stack 99999" on the WS) gives everything 9999 maxStack, the slot then rejects it because it only accepts unstackables

stackable items like Shurikens aren't normally upgradable because the behavior around merging & splitting stacks is buggy & prone to losing upgrades

Yeah, that may have been it. I didn't know that would collide with UpgradePlus, and I had compact stack installed. I'll see if it works after I disable it and load into my server

Most of those weapons should work, if you have a mod that changes those weapon's maxStack, that might be the issue, otherwise i don't know

There's a shortcut to /tModLoader/Mods ingame under "open mod packs folder" in the mod packs section, inside /Mods/ there's a file called enabled .json, it should have a list of the internal names for your enabled mods

I shouldn't have any that collide with UpgradePlus, however I could be mistaken. I tried a minishark, some summoner weapons, and a couple other ranged weapons on it. I also tried a melee weapon but that also didn't work. Are there any mods that you know of that collide with the mod?

Do you have any additional mods enabled, & which items did you try with the slot?

Hotbar position also causing the slot to highlight is a known visual bug (internally, the blacksmith slot is an inventory slot)

There is a bug in the mod rn where you cannot input anything into the npc slot, and when I select 1 on my hotbar it also selects the upgrade slot, but it is not usable.

I've wanted a mod like this for a while, and considered learning how to make it myself but decided to look for it first. I'm hoping this mod feels good to use! I seriously think that if they introduced weapon upgrade tiers into vanilla, at least in a simple form, it would help majorly with the problems you face post plantera.

Should work

this is pretty cool, does it work with thorium?

Yes, I'm very sorry. I have found the cause of the error. It is caused by a mod that changes the maximum number of stacks. After I disable it, the error disappears. Your mod is still great!

Do you have any other mods enabled?