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tModLoader

The official server for tModLoader, an API to mod Terraria. Collaborate and find the latest TML news!

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noble-gold
noble-gold3/15/2025

Weird Mounts Bug

I have a weird issue that is occurring with my mounts. Sometimes my mount will not be summoned, rather it would appear for a moment and then disappear immediately. Originally, I thought this was an issue with maximum buffs, but I am not near the buff limit and my friend's mounts work despite them having more buffs than me. I also do not have my mount key bounded to anything else so that isn't an issue either. And when I am able to mount it, the mount will disappear when a visible buff disappears...
adverse-sapphire
adverse-sapphire3/15/2025

Subject: tModLoader Startup Error – System.IO.FileNotFoundException

Dear tModLoader Support Team, I am experiencing an issue when trying to start tModLoader. Upon launch, I receive a fatal error message, and the program crashes. The error log indicates the following issue: System.IO.FileNotFoundException: Could not find file 'C:\Users\User\Documents\My Games\Terraria\ModLoader\Mods'....
No description
tame-yellow
tame-yellow3/15/2025

bruh why the heck does this happen?

when i tried downloading the VAETHYR modpack this happens. am i missing something or does anyone have any mods that makes this error go away.
No description
ratty-blush
ratty-blush3/14/2025

Assertion: Audio Client Failed to Activate

I've tried all the current fixes I can find, if I switch to the IAudioClient work around I get a microsoft .net error saying WASAPI can't activate any audio endpoint. I've reinstalled multiple times and tried all the fixes multiple times, as well as changing my audio. Nothing seems to fix this.
vicious-gold
vicious-gold3/14/2025

Map not showing up

For some reason, the map is refusing to show up no matter what keybind I set it to. It works just fine in vanilla Terraria and even if I disable mods.
rare-sapphire
rare-sapphire3/14/2025

Mods not working because of cloud failed

Not sure what to do and the one of the mod developers said there's something wrong with the tmodloader cloud saving
No description
sensitive-blue
sensitive-blue3/14/2025

terrible lag on a modpack called “vaethyr”

i’m able to run terraria with a 100 mods easily however i’ve seen many people complain about this mod lagging even with good specs and i’m unsure on how to fix this if anyone would please take a look at this all mods are listed below https://steamcommunity.com/sharedfiles/filedetails/?id=3438045995...
sunny-green
sunny-green3/14/2025

too many accessories mod forbidden one

anyone know how to make the full set of the forbidden one work? i have all 5 parts
fair-rose
fair-rose3/14/2025

Game Crashes

Game randomly crashing with no indicators
rising-crimson
rising-crimson3/14/2025

Low FPS Calamity

I'm having conflict with the Calamity Music mod and Wrath of The Gods are leaving me with low fps
conscious-sapphire
conscious-sapphire3/13/2025

Low FPS on a modpack

I started playing on a modpack with calamity and a "few" more mods, and my fps is getting pretty low when im near entities or some laggier areas of the world. On task manager, even though my fps is pretty bad, around 30, the cpu/ram/gpu usages from tmodloader are minimum, so i assume is not an issue with my pc being bad. Could it be mods conflicting or tmodloader is just unoptimized for this amount of mods? The mods im using are (all in the last version available): absoluteAquarian Utiliities AlchemistNPC Lite...
No description
stormy-gold
stormy-gold3/13/2025

cant join my friend

im using tmodloader and he's hosting the server vanilla, i have no mods enabled, yet i cant join
extended-salmon
extended-salmon3/13/2025

Can’t open player file

The tag present in the reparse point buffer is invalid
equal-aqua
equal-aqua3/13/2025

Copy of my thread on reddit

Hello. My friend has been getting this error message. Disabling all mods, reinstalling both Tmod and terraria itself did not help. Anybody has a clue how to fix it? Thank you for all the responds. Just to let you know it appears during Tmod loading EDIT: Also tried searching for the folder (which does not exist), checking the files of both Tmod and Terraria and moving some of my working files to his. Do you think replacing all of his files with mine might fix the issue? https://www.reddit.com/r/TmodLoader/comments/1jafgg6/need_help_with_an_error/...
No description
xenial-black
xenial-black3/13/2025

Migration Accident

Migrated my vanilla character thinking it would create another character in Tmodloader, but it override my current Calamity character. I'm hoping to retrieve the Calamity character.

Corrupted world file

My worlds keep getting corrupted why is this happening. I have almost 100 hours on tModLoader now. Basically I play a world a few days it gets corrupted and the backups won’t load then i start again this has happened to 4 of my worlds now. I am getting fed up of it. Everyone keeps saying “just replace it with a back up” but that isn’t working. I try to delete the corrupted save and replace it with a back up and the world just disappears from my tModLoader. What can I do?
No description

Abysmal FPS all of the sudden

used to be able to run the game perfectly fine on this pc but now i get 40-30 fps when theres a decent amount of dust or during rain, and also just randomly sometimes. started after a fresh install of windows and i reinstalled the game. happens without some of the mods on this list (tried without realistic sky, MP3Player, modders toolkit, wulfrum alligator, extraloadouts, efficientnohits, randomchecklist) and still happened
No description
ratty-blush
ratty-blush3/13/2025

Game crashing with no error message around the post-plantera phase no matter what I do

Log files are posted and heres the mod list AlchemistNPC Lite v1.9.7 (AlchemistNPCLite) Artificer's Accessories v1.3 (ArtificerMod) Boss Checklist v2.2.2 (BossChecklist) Calamity Mod v2.0.4.6 (CalamityMod)...