Having this new issue after update. Does anyone know the issue or how to fix it?

TypeLoadException: Could not load type of field 'BaseGameMode:gameModeScores' (0) due to: Could not resolve type with token 01000284 (from typeref, class/assembly ProtoBuf.GameMode, Rust.Data, Version=*.*.*.*, Culture=neutral, PublicKeyToken=null) assembly:Rust.Data, Version=*.*.*.*, Culture=neutral, PublicKeyToken=null type:ProtoBuf.GameMode member:(null) signature:<none>
  at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00026] in <745c4d442eef4e08b35b5975d62d89d1>:0 
UnityEngine.MonoBehaviour:StartCoroutineManaged2(IEnumerator)
UnityEngine.MonoBehaviour:StartCoroutine(IEnumerator)
<DedicatedServerStartup>d__18:MoveNext()
UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)

If you are using custom extensions like RustEdit, they have to be updated.

Wulf

If you are using custom extensions like RustEdit, they have to be updated.

excuse me, it happen to me, too. i not use RustEdit, just Discord, and there is no update on that plugin.

this is my console print :

Asset Warmup (6897/6897)
TypeLoadException: Could not load type of field 'BaseGameMode:gameModeScores' (0) due to: Could not resolve type with token 01000282 (from typeref, class/assembly ProtoBuf.GameMode, Rust.Data, Version=*.*.*.*, Culture=neutral, PublicKeyToken=null) assembly:Rust.Data, Version=*.*.*.*, Culture=neutral, PublicKeyToken=null type:ProtoBuf.GameMode member:(null) signature:<none>
at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00026] in <0b31faaf1c50461d95c83ac166a20393>:0
UnityEngine.MonoBehaviour:StartCoroutineManaged2(IEnumerator)
UnityEngine.MonoBehaviour:StartCoroutine(IEnumerator)
<DedicatedServerStartup>d__18:MoveNext()
UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)
(Filename: <0b31faaf1c50461d95c83ac166a20393> Line: 0)
Waiting for RCON to come up...
Waiting for RCON to come up...

Only other reason would be your server not being updated then.

I have the same problem with my server. I just update it and now after install oxide he dont wanna start.

ohh it solved. i backup my oxide and server folder, then delete all folder to install fresh and updated rust server file, then restore my oxide and server folder. thanks man.

same issue   here  anyone found out how to fix it ?

after asset warmup  i have same message  as aldomanis

I had the same issue but it was a simple user error. I didn't put quotes around the directory path when updating my server, so even though I thought I'd updated my server, I'd actually just created a new server in a different location. Found that out when I saw a new "rust" folder on my desktop.