mojira.dev
MCPE-236390

All blocks with format version 1.26.10 produce an erroneous content log error

Open
18

The bug

Using the correct latest format_version of 1.26.10 for block definition files in a behavior pack produces an erroneous content log error. The blocks still load correctly.

How to reproduce

  1. Ensure the content log is enabled

  2. Download and open the attached world

Expected behavior

No errors

Observed behavior

Multiple content errors are produced:

[Blocks][error]-block_definitions | C:/Users/.../AppData/Roaming/Minecraft Bedrock Preview/Users/.../games/com.mojang/minecraftWorlds/.../behavior_packs/0 | blocks/demos/with_display_name.json | Unexpected version for the loaded data

Linked issues

is duplicated by 1

Attachments

BUG.mcworld
Content Logs - Minecraft .md
 image-20260325-181548.png

Comments 12

[media]

Can confirm I am getting this error: [Blocks][error]-block_definitions | Unexpected version for the loaded data.

Confirmed on Bedrock Release 26.10 (Windows) (not Preview).
Clean repro: new flat world, Experiments OFF, only a single Behavior Pack enabled.
Content Log prints:
[Blocks][error]-block_definitions | ... | blocks/test_block.json | Unexpected version for the loaded data
However the custom blocks still register and work (/give shows them, can be placed normally).
Reproduces both with a minimal pack (single block) and with older addons.

same errors for me too and i know of a close friend who have a bedrock server that is also getting these errors since yesterdays update

image-20260325-181548.png

Experiencing the same issue, also with older format versions (1.26.10, 1.21.80, 1.21.0).

2 more comments

Same problem. Old packs that had no errors before have started showing these errors for all blocks. The pack works as normal and my only resolution is to ignore these errors.

I have tried chaning the format version number to new (1.26.10 & 1.26.0) and old versions (1.21.x) and nothing changes. I have also reduced the block json to the bare minimum and it still shows.

older addons (pre-1.26.0) used 

"register_to_creative_menu": true,

(or false) without error. if left in the json block file for 1.26+ they will throw the version error. While not spelled out in any change log, many older developers just had this in their blocks and had left it there. it was removed in:

1.16.100 ​

experimental

Holiday Creator Features

Versioned

  • Added events

Description ​

  • Removed is_experimental

  • Removed register_to_creative_menu

…so its just an oversight on the dev side for long time developers, like me.

… that said, this MAY fix you issue… but for me, the issue is still there… but just making sure others are not repeating the troubleshooting im doing…

@Test Pattern I’m afraid it doesn’t, but thanks for the input anyway. That may a clue of where the issue actually is.

Still occurs in v26.13

tryashtar

(Unassigned)

1567281

Confirmed

Windows

26.0, 26.10.24 Preview

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