ServersideQoL Duplicate Summon Fix

Author: laredson

Unofficial, server-only compatibility patch for ServersideQoL 1.8.0.

It prevents PlayerSpawnedProcessor.Initialize from aborting when multiple modded summon staves use the same attack-animation key, for example:

System.ArgumentException: An item with the same key has already been added.
Key: staff_summon

This is known to occur with content packs that add multiple summon staves, including Wizardry.

What the patch changes

ServersideQoL inserts each summon animation into a dictionary with Dictionary.Add. A repeated animation key throws an exception. This patch changes only that insertion path:

• Unique key: behavior remains unchanged.
• Duplicate key: the configured duplicate policy is applied.
• Default Merge: merges tracked summon-prefab lists and uses the highest MaxSpawned value.
• KeepFirst and KeepLast: diagnostic fallback policies.

Because ServersideQoL indexes this data by animation rather than by individual staff, duplicate staves using the same animation share a combined summon cap under the default merge policy.

Installation

Install only on the dedicated server:

Valheim dedicated server/BepInEx/plugins/ServersideQoL.DuplicateSummonFix.dll

Clients do not need this patch.

Remove any earlier test build before installing this release.

Requires:

• BepInExPack Valheim 5.4.2333 or compatible
• ServersideQoL 1.8.0

Verification

At startup, the server log should contain:

[Info   : ServersideQoL Duplicate Summon Fix] Patched PlayerSpawnedProcessor summon animation dictionary insertion.

When a duplicate is encountered, it logs the key once instead of throwing.

Configuration

Generated at:

BepInEx/config/laredson.serversideqol.duplicatesummonfix.cfg

Options:

• DuplicatePolicy = Merge — recommended.
• LogDuplicateKeys = true — logs each duplicate key once.

Tested with

• Valheim 0.221.12
• ServersideQoL 1.8.0
• Wizardry 1.1.8

Compatibility scope

Built specifically for ServersideQoL 1.8.0. If a future ServersideQoL version fixes the issue, remove this patch. If the target method changes, this patch logs an error and does not alter unrelated code.

This is an unofficial patch and is not affiliated with the ServersideQoL or Wizardry authors.