1. InnerCoreServer.java — getStringParam("path_for_world") was hardcoded to "worlds" (root), so the WorldDataSaver read/wrote worlds/moddata.json instead of worlds/<level>/moddata.json — all mod data appeared "lost". Now it resolves the real level name from server.properties. Also set NativeAPI.setWorldsPathOverride() so LevelInfo.getAbsoluteDir() points at the server's worlds/ (needed for custom dimensions later).
2. IDRegistry.java — genBlockID/genItemID ignored the pack's .staticids (looked up only the raw name, not the canonical minecraft:block_<name> key). Block/item numeric IDs were shifted vs the phone, silently corrupting saver hashes (tile entities restored with the wrong prototypes) and container item IDs. Fix: honor .staticids — IDs now match the phone exactly (verified 128/128 blocks). Self-gating: packs without the file behave as before.
3. BlockPalette.java (getStateUnsafe) — Horizon's leveldb stores custom block states as minecraft:block_* + "color": "<name>" (string = damage index in vanilla color order), Zote registered block_* + ints. Old fallback always resolved damage 0 → all variants wrong (49× "Replacing a unit with low compatibility"). Fix: strip minecraft: prefix, normalize color-string→int, resolve damage from the stored state. Result: 0 warnings, correct variants.
4. ItemUtils.java — get(...) didn't flush dirty custom data (putInt changes) before building the item, then bind() discarded it — wireless item bindings (controllerX/Y/Z) never persisted. Fix: call extra.getValue() first.
5. ItemInstanceExtra.java — phone items carry custom data wrapped as {"data":"<json string>"}; Zote parsed it flat, so getInt('energy') returned -1. Fix: unwrap on read (flat data passes through untouched).
6. RakNetPlayerSessionHooks.java — packet callbacks run on a network thread not marked SERVER, so mods checking LowLevelUtils.getCurrentThreadType() == "SERVER" (e.g. RS wireless grid open) silently did nothing. Fix: mark the packet thread as SERVER.
7. core-engine.dev.js — entityTypeName is not defined (ReferenceError) in TileEntityBasePrototype._readImpl broke deserialization of tile entities with legacy containers. Fix: use this.networkEntityTypeName.
