# Create: Sophisticated Storage Compatibility
\nA Fabric mod that fixes crashes when Sophisticated Storage containers are placed inside Create Contraptions on Minecraft 1.20.1.<\/p>\n
<\/p>\n
## Problem
\nWhen a Sophisticated Storage block entity (chest, barrel, etc.) is placed inside a Create Contraption, the game crashes with:<\/p>\n
“`
\njava.lang.ClassCastException: class com.simibubi.create.foundation.virtualWorld.VirtualChunk cannot be cast to class net.minecraft.world.chunk.WorldChunk
\n“`<\/p>\n
This happens because:<\/p>\n
1. Create Contraptions use a special VirtualChunk class for rendering and manipulation
\n2. Sophisticated Storage calls BlockEntity.setChanged() during NBT data loading
\n3. setChanged() tries to cast the chunk to WorldChunk, but it’s actually a VirtualChunk
\n4. The cast fails and crashes the game<\/p>\n
## Solution
\nThis mod implements a Mixin that intercepts all BlockEntity.setChanged() calls and:<\/p>\n
1. Checks if the block entity is from Sophisticated Storage
\n2. Checks if the current chunk is a Create VirtualChunk
\n3. If both conditions are true, cancels the setChanged() call to prevent the crash<\/p>\n
The fix is transparent and doesn’t break any functionality\u2014items still transfer properly between Create and Sophisticated Storage.<\/p>\n
## Features
\n– Enables Sophisticated Storage chests to be moved in Create Contraptions
\n– Prevents the ClassCastException crash
\n– Automatic detection \u2014 no configuration needed<\/p>\n","protected":false},"excerpt":{"rendered":"
Sophisticated Storage is now compatible with Create Fabric Contraptions.<\/p>\n","protected":false},"featured_media":145473,"template":"","meta":{"_minecraft_slug":"sophisticated-storage-create-fabric-compatibility","_minecraft_project_id":"OO84Irwr","_minecraft_author":"SypherRed","_minecraft_license":"GPL-3.0-only","_minecraft_downloads":129,"_minecraft_follows":1,"_minecraft_client_side":"optional","_minecraft_server_side":"required","_minecraft_storage_type":"zip","_minecraft_archive_name":"sophisticated-storage-create-fabric-compatibility.zip","_minecraft_size_bytes":79448,"_minecraft_version_count":1,"_minecraft_updated_at":"2026-05-16T13:39:36.487117Z","_minecraft_date_created":"2026-05-04T20:33:40.369803Z","_minecraft_date_modified":"2026-05-01T03:24:15.226934Z","_minecraft_project_url":"https:\/\/modrinth.com\/mod\/sophisticated-storage-create-fabric-compatibility","_minecraft_icon_attachment_id":145473,"_minecraft_imported_at":"2026-06-08T16:59:48+00:00","_minecraft_import_hash":"f72b7a8804af043951c8f096a2cb3e39","_minecraft_versions":"","_minecraft_links":"","_minecraft_gallery":"","_minecraft_api_metadata":""},"mod_category":[97,89,91,92],"mod_loader":[99],"minecraft_version":[36],"class_list":["post-145472","mod","type-mod","status-publish","has-post-thumbnail","hentry","mod_category-fabric","mod_category-game-mechanics","mod_category-storage","mod_category-utility","mod_loader-fabric","minecraft_version-1-20-1"],"yoast_head":"\n