[Bug] Alchemist - Yfts and ytds crashing game

[car123609]

Summary

The game is crashing, when using Alchemist to convert any yfts or ytds.
Loads to 100% then the game just crashes

The game has crashed: Oh no, we crashed!
Report Code: 46033eda-44e4-4d40-afe3-3615648a0ec3

Issue type

Both / Unsure

Repro rate

Often

Server build version

Build 92

OS

None

CPU

None

GPU

None

RAM

None

Storage type

None

Connection type

None

ISP and bandwidth

None

DxDiag

None

Network graph

None

Platform

None

OS version / distribution

None

CPU

None

RAM

None

Using txAdmin?

Yes

Hosting provider

Self-hosted

Machine type

None

/perf endpoint output

None

DDoS protection

None

ulimit -n value (Linux only)

None

Docker Compose file (Docker only)

No response

Steps to Reproduce

1. Use Alchemist to convert any yfts and ytds
2. then stream them to the server. etc like a vehicle
3. and when loading it crashes at 100%

Expected Behavior

Should load into the server and be able to play, but you cant it crashes.

Actual Behavior

Getting this crash code

The game has crashed: Oh no, we crashed!
Report Code: 46033eda-44e4-4d40-afe3-3615648a0ec3

Evidence

Additional Context

No response

[Nostow]

Also observed on Build 94

[Gogsi]

Can you provide at least one ydr or yft? The ones I tested seemed to work fine

[Gogsi]

For example, here's a custom vehicle converted with Alchemist

[shnoobrad]

some vehicles does work indeed but mostly converting one from fivem legacy to enhanced most likely won't work. or it says model does not exist or when u try to spawn it it's gonna crash

[car123609]

@Gogsi could you send me a streamed car so I can test on my server. Thanks

[Gogsi]

Here is the car from the screenshot. You will likely have to add this to server.cfg, as the YFT limit is really low by default:
increase_pool_size "FragmentStore" 1000

Otherwise you will likely crash with 0x3066500C Pool Size, Size == 42000

strage.zip

[car123609]

@Gogsi That vehicle works. but some don't i will upload one that doesnt in a bit

I even tried increase_pool_size "FragmentStore" 1000

[Gogsi]

I can reproduce this crash, thanks. The Sentry ID for my crash is 9928e881-c3d8-4e79-9c72-074ae2aa91ce

[Gogsi]

Hello, can you also send the original (Legacy/Gen8) version of this car, so it can be compared with the converted one?

[car123609]

@Gogsi Here is the gen8 car

dilettantex GEN8.zip

[jpss1090]

@Gogsi vc poderia me ajudar , onde conseguiu seu carro ?acho que entendi o erro , o fivem enhanced tem um limite de materiais e de geometria em um mesmo arquivo de 110 , ou seja acho que carros com muitos fazem crashar ,

[Gogsi]

Can confirm this vehicle is still crashing the game when loading as of b121.

Crash IDs:
b8967a15-6d1d-4be7-82af-77136af68214
732a972f-43dc-49ef-a196-3b34934825a1

Uploading the gen9 files as well, converted with the latest version of Alchemist (1.0.0.59)

dilettantex-gen9.zip

[Gogsi]

Some progress on this. I was able to get around the crash on the loading screen by fixing the fxmanifest.lua of the provided dilettantex car. Its manifest loaded every meta file as a handling.meta, vehicles.meta, carcols.meta, carvariations.meta and vehiclelayouts.meta at the same time.

This is the fix needed. I assume FiveM Legacy verifies if the file is actually a handling.meta file, while Enhanced is missing this check

However even after this, the game finishes loading and the console starts spamming this error, preventing the scripts from starting.

[18-08-2026 11:30:52] [    info] [                ] Invoking 0x01B8B001 INIT_SESSION (18/18)
[18-08-2026 11:30:52] [    info] [                ] SetLoadingScreen 0x01B8B001 INIT_SESSION 44177ms
[18-08-2026 11:30:52] [    info] [                ] Running functions of order 8 (1 total)
[18-08-2026 11:30:52] [    info] [                ] Invoking 0x1C168F4C INIT_SESSION (1/1)
[18-08-2026 11:30:52] [    info] [                ] SetLoadingScreen 0x1C168F4C INIT_SESSION 44188ms
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295
[18-08-2026 11:30:52] [   error] [                ] Invalid handle 4294967295

I'm not sure what this error refers to