Kerbal Space Program

I'm having a problem with a career mode game. This is my first career game!
I got some contracts that ask me to put a satellite into orbit but don't specify altitude. When I go to the Track Station or Map View on a flight and hover the mouse over the orbit drawn on the map (Ap/Pe), the game doesn't show anything, it just throws a NullPointerException!
I'm testing this without any mod!

I think that maybe is related to the stock alarm because of this:

[EXC 00:21:29.156] NullReferenceException: Object reference not set to an instance of an object
    AlarmTypePeriapsis.ShowAlarmMapObject (MapObject mapObject) (at <a5c262f7fe724eb9918d4487db8b635e>:0)
    AlarmClockScenario.ShowAlarmMapButton (MapObject mapObject) (at <a5c262f7fe724eb9918d4487db8b635e>:0)
    KSP.UI.Screens.Mapview.MapNode.OnPointerEnter (UnityEngine.EventSystems.PointerEventData eventData) (at <a5c262f7fe724eb9918d4487db8b635e>:0)
    UnityEngine.EventSystems.ExecuteEvents.Execute (UnityEngine.EventSystems.IPointerEnterHandler handler, UnityEngine.EventSystems.BaseEventData eventData) (at <9f35cb25d6a4409c8c02e911403f3f7f>:0)
    UnityEngine.EventSystems.ExecuteEvents.Execute[T] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] functor) (at <9f35cb25d6a4409c8c02e911403f3f7f>:0)
    UnityEngine.EventSystems.EventSystem:Update()

The game throws this every time I hover over the drawn orbit!