[MCPE-237396] Custom block json format version 1.26.10 and older format versions: content log error

21:48:10[Blocks][error]-block_definitions | C:/Users/…/AppData/Roaming/Minecraft Bedrock/Users/…/games/com.mojang/minecraftWorlds/mm-pTOfy5ps=/behavior_packs/… | blocks/slab.json | Unexpected version for the loaded data

Linked issues

duplicates 1

MCPE-236390 All blocks with format version 1.26.10 produce an erroneous content log error Open

Comments 2

[MCQA] Baslod 2026-03-25T11:20:42Z

Thank you for your report!

However, this issue has been temporarily closed as Awaiting Response.

Could you please attach an example addon showcasing the issue?

This ticket will automatically reopen when you reply.

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Rafftrack Studio 2026-03-25T20:34:41Z

This happens when loading the SplitBlocks or MultiBlocks Marketplace Addon. Both Addons still work perfectly fine but keep producing these error log messages.
Best

Custom block json format version 1.26.10 and older format versions: content log error - Unexpected version for the loaded data

Linked issues

duplicates 1

Comments 2