Minecraft Bedrock Add-On Conflicts: Complete Troubleshooting & Fix Guide (2026)

Add-ons are one of the best things about Minecraft Bedrock Edition. They bring new mobs, mechanics, items, and entire gameplay systems to a platform that spans phones, consoles, and PC — all without the Java mod loader infrastructure. But stack a few add-ons together and things can go sideways fast: crashes on world load, textures replaced with black-and-magenta checkerboards, mobs that spawn but do nothing, scripting errors that scroll endlessly across your screen.

Most of these problems trace back to a handful of root causes that are surprisingly consistent once you understand how Bedrock add-ons actually work under the hood. This guide covers every major conflict type, how to identify each one, and exactly what to do to fix it — whether you’re a player running marketplace packs or a creator building your own content.

How Bedrock Add-Ons Actually Work (The Short Version)

Before troubleshooting anything, it helps to understand the two-pack structure that every Bedrock add-on uses:

Behavior Packs (BP) define how things behave. Entity AI, loot tables, crafting recipes, spawn rules, scripting logic — all of this lives in the behavior pack. Behavior packs affect game logic.

Resource Packs (RP) define how things look. Textures, models, sounds, animations, and geometry files live here. Resource packs affect rendering.

Most add-ons ship both together, either as a single .mcaddon file that contains both or as two separate .mcpack files. When only one half arrives, you get exactly the class of errors you’d expect — either something that works but looks broken, or something that looks right but has no function.

Both packs identify themselves through a manifest.json file, which contains their UUID (a unique identifier string) and version number. These two values are how Minecraft recognises, loads, and links packs. When they’re wrong, duplicated, or mismatched, things fall apart.

The Most Common Conflict Types

1. UUID Collisions

Every add-on has a UUID — a 36-character string like 3f2504e0-4f89-11d3-9a0c-0305e82c3301 — that serves as its permanent identity in Minecraft. No two packs should ever share a UUID.

When two packs do share a UUID (which happens more than it should, especially with add-ons copied from templates or distributed without being properly generated), Minecraft gets confused about which pack is which. Results vary from one pack silently failing to load, to the game merging the wrong behavior and resource packs together, to outright crashes.

How to spot it: Check your Content Log (covered in detail below). UUID collision errors appear as warnings about packs being rejected or overriding each other.

How to fix it as a player: You generally can’t fix UUID collisions yourself without editing the pack’s files. If two installed packs conflict this way, try removing one and testing, then contact the add-on creators. Report the collision on their page — it’s a bug on their end.

How to fix it as a creator: Never copy UUIDs from templates or other packs. Generate fresh ones every time using a UUID generator (uuidgenerator.net or a similar tool). Every manifest.json needs two different UUIDs — one for the header, one for the module — and none of them should ever appear in any other pack you make.

2. Namespace and Entity ID Clashes

Every custom entity, block, and item in a Bedrock add-on gets an identifier in the format namespace:name — for example, mycreatures:fire_dragon or dungeonpack:boss. The namespace is supposed to be unique to each creator and pack.

When two add-ons use the same identifier for different things — say, two separate add-ons both creating an entity called common:boss — only one of them wins, based on pack stack order. The other simply doesn’t exist in-game, even though it appeared to install correctly.

Microsoft’s official cooperative add-on guidelines are explicit about this: namespaces should combine creator name and pack abbreviation to create something genuinely unique. Using generic terms like common, custom, or new as namespaces is a recipe for conflicts with other packs.

Recipe conflicts work similarly — if two add-ons define crafting recipes with the same input shape and materials, only one recipe will function. The game can’t run both.

How to spot it: The broken content will simply be missing or non-functional. The Content Log may show identifier warnings. If two mobs look like they should be in your game but only one appears, this is the likely cause.

How to fix it as a player: Install add-ons from different creators one at a time and test after each addition. When a conflict appears, you’ve found the culprit pair. Check whether either creator has an updated version with a fixed namespace, and contact them if not.

How to fix it as a creator: Use a namespace based on your creator handle and the pack’s abbreviated name — something like jdstudios_dc for “JD Studios Dragon Cave.” Make it specific enough that another creator is extremely unlikely to use the same string independently.

3. Pack Stack Order Conflicts

When multiple add-ons are active simultaneously, Bedrock loads them in a defined order called the pack stack. Packs higher in the stack take priority over packs lower in it. When two packs modify the same vanilla entity or same file, the higher-priority pack’s version wins entirely — the lower one is completely ignored for that file.

This is how resource pack texture overrides work intentionally — you put your custom texture pack above the vanilla resources and it replaces what you want to replace. But it’s also how unintentional conflicts happen: two add-ons that both modify the minecraft:cow entity will silently have one version of that entity disappear.

This is also why overriding vanilla entities using minecraft: namespaced files is a bad practice — it’s inherently conflict-prone across game updates and with other packs. Microsoft’s creator guidelines specifically warn against it.

How to spot it: Content that exists in one add-on disappears when another add-on is added. Remove the newer pack and the content reappears. This is the signature of a stack-order conflict.

How to fix it as a player: In your World Settings → Add-Ons screen, you can usually reorder packs. Move the pack whose content is disappearing higher in the stack. This doesn’t always resolve the underlying conflict but can restore the more important add-on’s functionality. Ultimately though, two packs that modify the same vanilla entity can’t fully coexist — one will always override the other.

How to fix it as a creator: Don’t override vanilla files. Add new entities, items, and blocks with unique namespaces rather than editing existing minecraft: files. Design your add-on to sit on top of vanilla rather than replacing it.

4. Missing Dependencies

A missing dependency error means your add-on needs another pack to function, and that pack either wasn’t installed or didn’t install correctly.

The most common version: an .mcaddon file that’s supposed to bundle both the behavior pack and resource pack together, but something goes wrong during import and only one half makes it in. The Content Log then shows that the successfully imported pack can’t find its linked partner.

Other causes include library packs — shared code packages that multiple add-ons depend on — not being installed, or a dependency pack being present but on a version the add-on doesn’t support.

How to spot it: The game shows a “Missing dependency” warning when you try to activate the pack. Alternatively, textures are missing on content that should have them, or scripted behaviors don’t function even though the behavior pack appears active.

How to fix it:

1. Check the add-on’s download page for all required files — sometimes the behavior and resource packs are distributed as separate downloads
2. Try importing the .mcaddon or .mcpack files again; import failures are silent and a second attempt sometimes succeeds
3. Remove both packs entirely, restart Minecraft, and reinstall from scratch — in the correct order: dependency pack first, then the main add-on
4. Check whether the pack requires a specific library pack and install that separately
5. If the pack works in a brand new world but not your existing one, your world’s add-on configuration may be corrupted — test in a new world to confirm the add-on works, then back up and troubleshoot the original world

5. Scripting Conflicts (GameTest / Script API)

Modern Bedrock add-ons increasingly use JavaScript-based scripting through the Script API. When two scripted add-ons both subscribe to the same events — like world.afterEvents.playerSpawn — and neither is written to check whether the subscription already exists, both scripts run on every event trigger. After a /reload, this can multiply further as each reload adds another subscription layer.

Real player reports back this up. A scripting conflict between Storage Drawers and Enchanting++ on Bedrock causes a repeating error in the Content Log and broken functionality for both packs. Scripting conflicts are harder to diagnose than identifier conflicts because the error messages require understanding what the scripts are actually doing.

How to spot it: Content Log shows script errors, typically referencing undefined values or event handlers. Behavior that should trigger once triggers multiple times. Scripted content stops working entirely after using /reload.

How to fix it as a player: This type of conflict requires the add-on creator to fix it. Your only option as a player is to identify which two packs conflict, disable one, and report the issue to the creator. Provide them the Content Log error text — it’s the most useful thing you can send.

How to fix it as a creator: Guard your event subscriptions with initialization checks:

javascript

let isInitialized = false;
function initialize() {
  if (isInitialized) return;
  world.afterEvents.playerSpawn.subscribe(onPlayerSpawn);
  isInitialized = true;
}
initialize();

This prevents duplicate subscriptions from accumulating across /reload calls.

6. Version Incompatibility

Every add-on’s manifest.json specifies a min_engine_version — the minimum Minecraft version the pack supports. When Minecraft updates to a new major version (like the 26.x series in 2026), add-ons built for significantly older versions may stop functioning correctly.

Bedrock add-ons don’t have the version-locking system that world templates have. They have to keep working as Minecraft evolves. When Mojang changes how a component works, modifies entity behavior, or updates the Script API, old add-ons that depend on the previous behavior can break silently or produce errors.

A real-world example: Bedrock Edition 26.2 (released February 25, 2026) shipped a hotfix specifically for bug MCPE-235929 — worlds with add-ons failing to load correctly, producing pink and black textures or outright crashes. That’s an engine-level change breaking existing add-ons in a way players couldn’t fix themselves.

How to spot it: Add-ons that worked previously start showing errors or missing content after a Minecraft update. The Content Log typically shows format version warnings.

How to fix it as a player: Check whether the add-on creator has released an updated version. If not, you may need to wait or temporarily roll back your Minecraft version (which requires disabling auto-update on your platform). Keeping Minecraft updated to the latest version before updating add-ons is generally better than the reverse.

How to fix it as a creator: Set appropriate min_engine_version values and update your add-on with each major Minecraft release. Avoid building hard dependencies on behaviors that Mojang explicitly documents as subject to change.

Your Most Powerful Tool: The Content Log

The Content Log is Minecraft Bedrock’s built-in add-on error reporting system. It captures every load error, identifier mismatch, missing file reference, and script exception that occurs when add-ons are active. It’s the difference between guessing what’s wrong and knowing.

How to enable it:

1. Go to Settings → Creator
2. Enable Content Log GUI (shows errors on screen during load) and Content Log File (saves errors to a text file)

The log appears on screen when you load a world and whenever new errors occur during gameplay. The saved file lives at:

• Windows: %LocalAppData%\Packages\Microsoft.MinecraftUWP_8wekyb3d8bbwe\LocalState\logs\
• Android: /sdcard/games/com.mojang/logs/
• iOS: In the Files app under Minecraft’s local storage

💡 Pro Tip: The Content Log doesn’t clear between world loads. Old errors from previously loaded worlds stay in the log. Always note when errors appear relative to which world or add-on change you just made — this is what separates relevant errors from noise.

Reading common Content Log errors:

[ERROR][Vanilla]: ... entity identifier not found — An entity’s behavior and resource pack identifiers don’t match. Check for namespace typos or case mismatches.

[WARNING]: Pack with id ... is already registered — UUID collision. Two packs share the same UUID.

[ERROR]: Missing dependency — A required linked pack isn’t installed or wasn’t found.

[ERROR]: JSON parse error — The add-on contains a JSON syntax error. The log usually specifies the file and line.

[ERROR]: Script module ... failed to load — A scripting error prevented the pack’s JavaScript from initialising. Check for API version mismatches or script runtime errors.

Step-by-Step Conflict Diagnosis Process

When something’s broken and you don’t know which add-on caused it, work through this in order:

Step 1 — Enable the Content Log and reproduce the issue. Load your world, let it fully load, then note every error that appears. This gives you the clearest picture of what’s actually failing.

Step 2 — Binary search your add-ons. If you have many add-ons, don’t remove them one by one — that takes forever. Instead, disable half of them and test. If the problem disappears, the culprit is in the disabled half. Re-enable half of those. Continue halving until you isolate the problem add-on. This typically finds the conflict in 4–5 steps even with 20+ packs.

Step 3 — Test the suspected add-on alone. Remove all other add-ons and run only the suspected pack. If the error persists, it’s a bug within that pack. If it disappears, you have a conflict between that pack and something else — add packs back one at a time to find the conflicting pair.

Step 4 — Check for updates. Before assuming a conflict requires contact with the creator, check whether either pack has an update. Version mismatches cause many conflicts that creators have already fixed.

Step 5 — Test in a new world. If the issue only occurs in your existing world but not a new one, the problem may be world-state related rather than an actual pack conflict. Some add-on changes don’t apply cleanly to worlds that existed before the pack was added.

Step 6 — Clear the cache. On mobile and Windows, Minecraft caches pack data. Stale cache can cause packs that appear correctly installed to behave as though they’re broken. Clear it through Settings → Storage → Cached Data (on mobile) or by navigating to %LocalAppData%\Packages\Microsoft.MinecraftUWP_8wekyb3d8bbwe\LocalState\games\com.mojang\ and clearing the minecraftpe folder’s cache data.

Step 7 — Contact the creator. When you contact an add-on creator about a conflict, include: your Minecraft version number (Settings → About), the names and versions of the conflicting add-ons, and the relevant Content Log output. This is all they need to reproduce and fix the issue.

Platform-Specific Notes

Windows (Microsoft Store / Xbox App): The Content Log file is most accessible here. Add-on files live in %LocalAppData%\Packages\Microsoft.MinecraftUWP_8wekyb3d8bbwe\LocalState\games\com.mojang\ — behavior packs in behavior_packs, resource packs in resource_packs. You can manually inspect and edit pack files here if needed.

Android: Files are in /sdcard/games/com.mojang/. You can manage pack files with a file manager app. The Content Log saves to the logs folder. Some Android devices restrict access to this directory depending on OS version — use a PC connection if needed.

iOS: Less accessible than Android, but the Files app can browse Minecraft’s local storage. Transferring files on/off is easiest via the Files app’s local storage section or through a PC connected via iTunes.

PlayStation, Xbox, Nintendo Switch: You can’t directly access or edit pack files on console. You’re limited to in-game add-on management. The Content Log GUI (on-screen errors) is your only diagnostic tool — the log file isn’t accessible. For serious conflicts on console, the only real options are removing packs until the issue resolves or using a connected PC through Realms to manage the world’s add-ons.

Realms: Add-on conflicts on Realms affect all players in the world. The Realm owner needs to manage add-on changes. When adding new packs to an existing Realm, have all players leave first, make the change, verify it works in a test world, then push to the Realm. Dependencies must be applied to the Realm from the owner’s PC or phone — they don’t transfer automatically in all cases.

Preventing Conflicts Before They Happen

The best conflict is one you never encounter. A few practices that keep add-on stacks clean:

Add one pack at a time. Every time you add a new add-on to an existing world, add only that pack, test thoroughly, then add the next one. When conflicts arise with this approach, you always know exactly what caused them.

Read the add-on page before installing. Good creators list known incompatibilities and required dependencies prominently. Check for “Known Conflicts” or “Compatibility” sections before adding any pack to a loaded stack.

Keep add-ons updated. Most creator-side conflicts get fixed in updates. An outdated pack is much more likely to conflict with current Minecraft or other packs than a current one.

Use add-ons from the Minecraft Marketplace cautiously alongside community packs. Marketplace add-ons are tested for Minecraft compatibility but not necessarily for compatibility with every community add-on. The Marketplace curation doesn’t prevent namespace conflicts with independently created packs.

Back up your world before adding any add-on. Especially in survival worlds with progress you care about. Some add-on conflicts can corrupt world data in ways that are difficult to reverse. A backup before every significant change costs a few minutes and can save hours.

Test in a separate world first. For any substantial add-on — especially ones with complex scripting — create a throwaway creative world, apply the pack there, and test it thoroughly before adding it to your main survival world.

A Note on Add-Ons vs Mods (Bedrock vs Java)

If you’re coming from Java Edition, it’s worth understanding how Bedrock add-ons differ from Java mods in ways that directly affect conflicts.

Java mods run through loaders like Fabric or Forge that provide dependency management, conflict detection, and compatibility layers. Fabric has a built-in system for declaring required libraries and incompatible mods. This doesn’t prevent all conflicts, but it makes them more visible and more systematically manageable.

Bedrock add-ons have no equivalent loader system. There’s no central dependency graph, no automatic incompatibility detection, and no shared library infrastructure (though the Script API is moving toward more structured dependency declaration). Conflicts are discovered manually — by running packs and seeing what breaks.

This is improving. Mojang’s cooperative add-on guidelines push creators toward better namespace practices, and the Script API is maturing in ways that reduce common scripting conflicts. But for now, manual testing and the Content Log are the primary tools available to players.

If you’re interested in the Java side of performance and optimisation more broadly, our GPU memory optimisation and Vulkan preparation guide covers the technical landscape for Java Edition players in 2026 — including what the Vulkan renderer transition means for mod compatibility on that side.

Quick Reference: Common Symptoms and Their Causes

Frequently Asked Questions