Does it run through Retromod?

Logs says that the mods crashed at the minecraft launch

Crash is attributable to Chunky - NoSuchMethodError on TicketType.create(String, Comparator), the 1.18-era chunk-ticket API that 26.1 reworked. AppleSkin alone was not isolated in this run, which is exactly what bundle reports are for. See the single-mod Chunky entry.

snapshot.3 fixed the Retromod-caused failure (the model bridge was rewriting its mixin handler descriptors — #70). What remains is the mod's own jar-in-jar reach-entity-attributes 2.4.0, whose 1.20.1-era mixins target methods that changed by 1.21.11 (multiple critical injection failures). Needs the mixin-handler re-typing work tracked for a later release, or a 1.21.x build of the mod.

AsyncParticles is coremod-class - it wraps the Mixin service itself and generates conditional mixins at load time. On 1.21.11 its own machinery cancels most of its mixins, and its core @Overwrite targets a ParticleEngine method whose signature changed, so it cannot apply. An @Overwrite body is the replacement code itself; no redirect can rewrite it for a changed method. Listed on Mods That Can't Be Translated. (#63)

NoSuchMethodError in the server tick loop: TicketType.create(String, Comparator). 26.1 reworked TicketType, and Chunky creates its chunk-loading ticket with the old 1.18 signature. Needs a TicketType bridge in Retromod (tracked) or a current Chunky build.

The transform itself completes (metadata patched, bridges embedded), but the first boot with the transformed jar terminates the JVM right after the mod list prints, with no exception, crash report, or hs_err. Under investigation — the silent-death signature doesn't match any known Retromod failure mode yet.

Crashed at construct time on snapshot.2 and earlier (NoClassDefFoundError: RecipesUpdatedEvent — the event was renamed in the 1.21.4 line). Fixed by a class redirect in snapshot.3; the listener only re-triggers EMI's own reload, so the rename is all it needed.

Needed the FabricItemGroupBuilder overload fix (#57) and the pre-1.21.2 InteractionResult field-descriptor bridge. Mobs and items are present; pre-1.17 custom model rendering depends on the model bridge and may show visual gaps.

Loaded with no content before snapshot.2 — it registers everything through the bundled Critter library, whose remapped nested bytecode was being discarded. Fixed in snapshot.2 (#71): nested JIJ libraries keep their remap now.

The bytecode side mostly works (the game reaches the title screen), but the mod ships datapack worldgen — biomes, configured/placed features, carvers — in 1.20.1 JSON formats that 26.1 can't parse (schema changes plus renamed c: tag conventions). Registry loading fails, which blocks entering or creating ANY world while the mod is present. Migrating datapack data across MC versions is a separate subsystem Retromod doesn't have yet. Its entity registration also trips a FabricEntityTypeBuilder inner-class gap (tracked).

Crashed on world create before snapshot.1 (ClassCastException in its LightTexture mixin). The render mixins are whole-class-stripped now (#68), so worlds load — but that means the actual darkness effect doesn't apply.