Exception (cs:66865): NullReferenceException: Object reference not set to an instance of an object. InstancingContainer..ctor (System.Int32 capacity) (at <00000000000000000000000000000000>:0) System.Collections.Generic.ObjectEqualityComparer`1[T].GetHashCode (T obj) (at <00000000000000000000000000000000>:0) System.Collections.Generic.Dictionary`2[TKey,TValue].FindEntry (TKey key) (at <00000000000000000000000000000000>:0) System.Collections.Generic.Dictionary`2[TKey,TValue].TryGetValue (TKey key, TValue& value) (at <00000000000000000000000000000000>:0) ListDictionary`2[TKey,TVal].TryGetValue (TKey key, TVal& val) (at <00000000000000000000000000000000>:0) DeferredDecalSystem.GetList (DeferredDecal decal, ListDictionary`2[TKey,TVal] dict, System.Int32 pass) (at <00000000000000000000000000000000>:0) DeferredDecalSystem.RemoveDecal (DeferredDecal decal) (at <00000000000000000000000000000000>:0) DeferredDecal.OnDisable () (at <00000000000000000000000000000000>:0) MeshGroupCull.SetLOD (System.Int32 newlod) (at <00000000000000000000000000000000>:0) LODComponent.ChangeLOD () (at <00000000000000000000000000000000>:0) LODGrid.Add (ILOD component, UnityEngine.Transform transform, LODCell& cell) (at <00000000000000000000000000000000>:0) LODComponent.OnEnable () (at <00000000000000000000000000000000>:0) GameManager.CreatePrefab (System.String strPrefab, UnityEngine.Vector3 pos, UnityEngine.Quaternion rot, UnityEngine.Vector3 scale, System.Boolean active) (at <00000000000000000000000000000000>:0) Prefab.Spawn (UnityEngine.Vector3 pos, UnityEngine.Quaternion rot, UnityEngine.Vector3 scale, System.Boolean active) (at <00000000000000000000000000000000>:0) World.Spawn (System.String category, Prefab prefab, UnityEngine.Vector3 position, UnityEngine.Quaternion rotation, UnityEngine.Vector3 scale) (at <00000000000000000000000000000000>:0) World.Spawn (ProtoBuf.PrefabData prefab) (at <00000000000000000000000000000000>:0) World+<Spawn>d__67.MoveNext () (at <00000000000000000000000000000000>:0) WorldSetup+<InitCoroutine>d__15.MoveNext (

An error in the player's console and in the server console, if you put a regular card, then there are no errors.