Attempting to restore an older save, from an older custom map version. I'm not sure if this is failing because there is something in the way that needs removed first (in this case would be a quarry inside of the new missile silo), or if just is a limitation of the plugin.
 
Failed to call hook 'cLoadNamed' on plugin 'SaveMyMap v1.3.9' (NullReferenceException: Object reference not set to an instance of an object.) at BaseEntity.ClientRPCStart (System.String funcName) [0x00012] in :0
at GlobalNetworkHandler.SendEntityDelete (NetworkableId networkableId, Network.SendInfo info) [0x00008] in :0
at GlobalNetworkHandler.OnEntityKilled (BaseNetworkable entity) [0x00042] in :0
at BaseNetworkable.TerminateOnClient (BaseNetworkable+DestroyMode mode) [0x00083] in :0
at BaseNetworkable.Kill (BaseNetworkable+DestroyMode mode) [0x0005f] in :0
at Oxide.Plugins.SaveMyMap.cLoadNamed (ConsoleSystem+Arg arg) [0x000cf] in :0
at Oxide.Plugins.SaveMyMap.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00675] in :0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in :0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in :0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in :0
Calling 'cLoadNamed' on 'SaveMyMap v1.3.9' took 728ms