Help with a loading error

[Maelstrom Vortex]

Anyone have any clue what this is saying? It appears to be a Serenity expansion error for some part of the serenity module.

[EXC 18:56:43.204] ReflectionTypeLoadException: Exception of type 'System.Reflection.ReflectionTypeLoadException' was thrown.
    System.Reflection.Assembly.GetTypes () (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
    AssemblyLoader.GetTypesOfClassesImplementingInterface[T] () (at <9d71e4043e394d78a6cf9193ad011698>:0)
    Expansions.Missions.MissionsUtils.InitialiseAdjusterTypes () (at <9d71e4043e394d78a6cf9193ad011698>:0)
    Expansions.ExpansionsLoader+<LoadExpansions>d__21.MoveNext () (at <9d71e4043e394d78a6cf9193ad011698>:0)
    UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at <5aeafee3fea24f37abd1315553f2cfa6>:0)
[EXC 18:57:27.074] NullReferenceException: Object reference not set to an instance of an object
    FlightGlobals.get_ActiveVessel () (at <9d71e4043e394d78a6cf9193ad011698>:0)
    KSP.UI.Screens.DebugToolbar.Screens.Debug.ScreenFlightInfo.Start () (at <9d71e4043e394d78a6cf9193ad011698>:0)

Appears related to:

[ERR 18:56:13.329] Exception handling event OnPartLoaderLoaded in class TexturesUnlimitedLoader:System.NullReferenceException: Object reference not set to an instance of an object
  at KSPShaderTools.TexturesUnlimitedLoader.applyToPartIcons () [0x00047] in <75d7754c63444866bb6a64b5e3b9f15c>:0 
  at KSPShaderTools.TexturesUnlimitedLoader.onPartListLoaded () [0x0000a] in <75d7754c63444866bb6a64b5e3b9f15c>:0 
  at EventVoid.Fire () [0x00127] in <9d71e4043e394d78a6cf9193ad011698>:0 

[EXC 18:56:13.330] NullReferenceException: Object reference not set to an instance of an object
    KSPShaderTools.TexturesUnlimitedLoader.applyToPartIcons () (at <75d7754c63444866bb6a64b5e3b9f15c>:0)
    KSPShaderTools.TexturesUnlimitedLoader.onPartListLoaded () (at <75d7754c63444866bb6a64b5e3b9f15c>:0)
    EventVoid.Fire () (at <9d71e4043e394d78a6cf9193ad011698>:0)
    UnityEngine.Debug:LogException(Exception)
    EventVoid:Fire()
    <CompileAll>d__13:MoveNext()
    UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)

And possibly these:

 

[WRN 18:56:07.029] The script 'SolarSailNavigator.Navigator' could not be instantiated!
[ERR 18:56:07.029] Cannot create a PartModule of typename 'Navigator'

[WRN 18:56:07.030] The script 'SolarSailNavigator.Navigator' could not be instantiated!
[EXC 18:56:07.032] NullReferenceException: Object reference not set to an instance of an object
    PartModuleList..ctor (Part part) (at <9d71e4043e394d78a6cf9193ad011698>:0)
    Part.Awake () (at <9d71e4043e394d78a6cf9193ad011698>:0)
    UnityEngine.Object:Instantiate(GameObject)
    PartLoader:CreatePartIcon(GameObject, Single&)
    PartLoader:ParsePart(UrlConfig, ConfigNode)
    <CompileParts>d__56:MoveNext()
    UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)
[LOG 18:56:07.044] PartLoader: Part 'WarpPlugin/Parts/Stuctural/TrussEnd/part/LH_IcarusTrussEnd' has no database record. Creating.
[WRN 18:56:07.045] The script 'SolarSailNavigator.Navigator' could not be instantiated!
[EXC 18:56:07.047] NullReferenceException: Object reference not set to an instance of an object
    PartModuleList..ctor (Part part) (at <9d71e4043e394d78a6cf9193ad011698>:0)
    Part.Awake () (at <9d71e4043e394d78a6cf9193ad011698>:0)
    UnityEngine.GameObject:SetActive(Boolean)
    DragCubeSystem:SetupPartForRender(Part, GameObject)
    <RenderDragCubesCoroutine>d__30:MoveNext()
    UnityEngine.MonoBehaviour:StartCoroutine(IEnumerator)
    <SetupDragCubeCoroutine>d__45:MoveNext()
    UnityEngine.MonoBehaviour:StartCoroutine(IEnumerator)
    <CompileParts>d__56:MoveNext()
    UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)
[EXC 18:56:07.055] NullReferenceException: Object reference not set to an instance of an object
    DragCubeSystem.SetupPartForRender (Part part, UnityEngine.GameObject partObject) (at <9d71e4043e394d78a6cf9193ad011698>:0)
    DragCubeSystem+<RenderDragCubesCoroutine>d__30.MoveNext () (at <9d71e4043e394d78a6cf9193ad011698>:0)
    UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at <5aeafee3fea24f37abd1315553f2cfa6>:0)
    UnityEngine.MonoBehaviour:StartCoroutine(IEnumerator)
    <SetupDragCubeCoroutine>d__45:MoveNext()
    UnityEngine.MonoBehaviour:StartCoroutine(IEnumerator)
    <CompileParts>d__56:MoveNext()
    UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)

It appears to have something about get-active vessel but why that would be thrown on the  start screen's pre-loading screen and cause it to lock on the serenity expansion load is beyond me.

Edited December 1, 2019 by Maelstrom Vortex

[Commodore_32]

Try a file validation, what mods do you have?

What are the PC specs?