Backpacks Valheim 1 Compatibility

This package lets the official Smoothbrain-Backpacks-1.3.8 package run on Valheim 1.0.7 while its upstream release catches up with the game's changed method signatures.

It does not redistribute Smoothbrain's DLL, models, assets, or source. Thunderstore installs the official Backpacks package as a dependency. A small BepInEx preloader patch then applies narrowly guarded compatibility repairs to that installed copy before the game loads it.

Scope

• replaces the removed ZRoutedRpc.Everybody field reads with the same declared constant value;
• redirects obsolete Inventory.AddItem targets and calls to the live Valheim 1.0 overloads;
• supplies neutral/default values for the new Inventory.IsTeleportable, VisEquipment.AttachArmor, Character.Message, and EffectList.Create parameters;
• refuses to patch anything except the exact official Backpacks 1.3.8 binary it was built and tested against;
• keeps a recoverable copy of the original DLL beside the patched profile copy;
• makes no intentional change to backpack mechanics, assets, defaults, plugin identity, or network protocol.

Installation

Install this package normally with r2modman or Thunderstore Mod Manager. Its dependencies install BepInEx and the official Backpacks 1.3.8 package automatically. Do not also import the earlier private full-binary compatibility ZIP into the same profile.

Install the same package set on a dedicated server and every joining client.

Removal

Remove this compatibility package and reinstall the official Backpacks package to restore a completely clean upstream DLL. The patch only touches the active profile copy; it does not alter Thunderstore's package cache.

Tested matrix

• Valheim 1.0.7
• BepInExPack Valheim 5.4.2350
• Smoothbrain Backpacks 1.3.8

This is an independent compatibility patch, not an upstream Smoothbrain release.