Hi all,

My startup file:
:STEAM
C:\steamcmd\steamcmd.exe +login anonymous +force_install_dir c:\rustserver\ +app_update 258550 +quit

:OXIDE
curl -L "https://umod.org/games/rust/download?tag=public" --output "C:\rustserver\Oxide.Rust.zip"
"C:\Program Files\7-zip/7z.exe" x "C:\rustserver\Oxide.Rust.zip" -o"C:\rustserver" -aoa
del "C:\rustserver\Oxide.Rust.zip"

cd "C:\rustserver"
RustDedicated.exe -logfile "C:/rustserver/output_log.txt" -batchmode +server.port etc...

Error log:
The script 'CardTable' could not be instantiated!
(Filename: Line: 227)

NullReferenceException: Object reference not set to an instance of an object
at Construction.AttributeSetup (UnityEngine.GameObject rootObj, System.String name, System.Boolean serverside, System.Boolean clientside, System.Boolean bundling) [0x00036] in <020036bbec134b7d85372e2237c7a43c>:0
at PrefabAttribute.PreProcess (IPrefabProcessor preProcess, UnityEngine.GameObject rootObj, System.String name, System.Boolean serverside, System.Boolean clientside, System.Boolean bundling) [0x000c1] in <020036bbec134b7d85372e2237c7a43c>:0
at PrefabPreProcess.ProcessObject (System.String name, UnityEngine.GameObject go, System.Boolean resetLocalTransform) [0x001bc] in <020036bbec134b7d85372e2237c7a43c>:0
at PrefabPreProcess.Process (System.String name, UnityEngine.GameObject go) [0x00042] in <020036bbec134b7d85372e2237c7a43c>:0
at GameManager.FindPrefab (System.String strPrefab) [0x0002a] in <020036bbec134b7d85372e2237c7a43c>:0
at FileSystem_Warmup.PrefabWarmup (System.String path) [0x00000] in <020036bbec134b7d85372e2237c7a43c>:0
at FileSystem_Warmup+<RunImpl>d__7.MoveNext () [0x000f0] in <020036bbec134b7d85372e2237c7a43c>:0
at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00026] in <745c4d442eef4e08b35b5975d62d89d1>:0

(Filename: <020036bbec134b7d85372e2237c7a43c> Line: 0)

Solution: I deleted all of the files in my folder except the batch script, the oxide folder, and the RustDedicated.exe file - and started the server without errors.