After i wrote comment above, i make another copy of 1.12.2 with NOT RSS/RO installed and KK/KSR installed.
as a result, KK/KSR work properly. but i want use KK/KSR upon Earth, not Kerbin...
upon logs link contain 1.12.2 with RSS/RO and KK/KSR logs too.
i wonder this several lines in ksp.log are reason...
[WRN 17:12:28.910] KK: [EditorGUI] Draw: No instance selected and editor is open --> Closing it
[EXC 17:14:21.897] NullReferenceException: Object reference not set to an instance of an object
KerbalKonstructs.UI.MapDecalEditor.MapDecalEditorWindow (System.Int32 windowID) (at <7dd8cd55479d4f5fa301c344b9c37231>:0)
UnityEngine.GUI.CallWindowDelegate (UnityEngine.GUI+WindowFunction func, System.Int32 id, System.Int32 instanceID, UnityEngine.GUISkin _skin, System.Int32 forceRect, System.Single width, System.Single height, UnityEngine.GUIStyle style) (at <58f888e0d56a4620958c8e58a768c70d>:0)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
ModuleManager.UnityLogHandle.InterceptLogHandler:LogException(Exception, Object)
UnityEngine.Debug:CallOverridenDebugHandler(Exception, Object)
Anyone can Fix it or teaching avoid it?