Exception in Verse.Window.InnerWindowOnGUI: System.NullReferenceException: Object reference not set to an instance of an object [Ref 8617D1CE] at Verse.ResearchProjectDef+<>c.<get_UnlockedDefs>b__83_2 (Verse.Def x) [0x00000] in <cb53cd4422904947932d33f561ad8d15>:0 at System.Linq.EnumerableSorter`2[TElement,TKey].ComputeKeys (TElement[] elements, System.Int32 count) [0x00010] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Linq.EnumerableSorter`1[TElement].ComputeMap (TElement[] elements, System.Int32 count) [0x00000] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Linq.EnumerableSorter`1[TElement].Sort (TElement[] elements, System.Int32 count) [0x00000] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Linq.OrderedEnumerable`1[TElement].SortedMap (System.Linq.Buffer`1[TElement] buffer) [0x00006] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Linq.OrderedEnumerable`1+<GetEnumerator>d__3[TElement].MoveNext () [0x0003d] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Collections.Generic.LargeArrayBuilder`1[T].AddRange (System.Collections.Generic.IEnumerable`1[T] items) [0x0003d] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Collections.Generic.SparseArrayBuilder`1[T].AddRange (System.Collections.Generic.IEnumerable`1[T] items) [0x00000] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Collections.Generic.SparseArrayBuilder`1[T].ReserveOrAdd (System.Collections.Generic.IEnumerable`1[T] items) [0x00017] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Linq.Enumerable+ConcatNIterator`1[TSource].LazyToArray () [0x00021] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Linq.Enumerable+ConcatNIterator`1[TSource].ToArray () [0x00008] in <1f993cbf88314b1baa1e10ca917bdc64>:0 <0x23c33743f90 + 0x00076> <unknown method> at System.Linq.OrderedEnumerable`1+<GetEnumerator>d__3[TElement].MoveNext () [0x0001e] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Linq.Set`1[TElement].UnionWith (System.Collections.Generic.IEnumerable`1[T] other) [0x00018] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Linq.Enumerable+DistinctIterator`1[TSource].FillSet () [0x0000b] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Linq.Enumerable+DistinctIterator`1[TSource].ToList () [0x00000] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at System.Linq.Enumerable.ToList[TSource] (System.Collections.Generic.IEnumerable`1[T] source) [0x0001f] in <1f993cbf88314b1baa1e10ca917bdc64>:0 at Verse.ResearchProjectDef.get_UnlockedDefs () [0x001c1] in <cb53cd4422904947932d33f561ad8d15>:0 - POSTFIX Kikohi.PipeSystem: Void PipeSystem.ResearchProjectDef_UnlockedDefs_Patch:Postfix(ResearchProjectDef& __instance, List`1& __result) - POSTFIX com.Axolotl.rimworld.mod: List`1 Axolotl.MoeLotlResearchProjectDefPatch:Postfix(List`1 __result, ResearchProjectDef __instance) - POSTFIX com.AxolotlFactionExpand.rimworld.mod: List`1 Axolotl.FactionExpand.MoeLotlResearchProjectDefPatch:Postfix(List`1 __result, ResearchProjectDef __instance) - POSTFIX fxz.rigormortis: List`1 RigorMortis.Research_Patch:Postfix(List`1 __result, ResearchProjectDef __instance) at RimWorld.ResearchPrerequisitesUtility.ComputeResearchPrerequisites () [0x0001a] in <cb53cd4422904947932d33f561ad8d15>:0 at RimWorld.ResearchPrerequisitesUtility.UnlockedDefsGroupedByPrerequisites (Verse.ResearchProjectDef rd) [0x00000] in <cb53cd4422904947932d33f561ad8d15>:0 at RimWorld.MainTabWindow_Research.UnlockedDefsGroupedByPrerequisites (Verse.ResearchProjectDef project) [0x00023] in <cb53cd4422904947932d33f561ad8d15>:0 at RimWorld.MainTabWindow_Research.DrawUnlockableHyperlinks (UnityEngine.Rect rect, UnityEngine.Rect visibleRect, Verse.ResearchProjectDef project) [0x00000] in <cb53cd4422904947932d33f561ad8d15>:0 at RimWorld.MainTabWindow_Research.DrawProjectScrollView (UnityEngine.Rect rect) [0x0023c] in <cb53cd4422904947932d33f561ad8d15>:0 at RimWorld.MainTabWindow_Research.DrawProjectInfo (UnityEngine.Rect rect) [0x00456] in <cb53cd4422904947932d33f561ad8d15>:0 - TRANSPILER fxz.ratkinanomaly: IEnumerable`1 RatkinAnomaly.Background_PatchProject:Transpiler(IEnumerable`1 instructions, ILGenerator generator) - TRANSPILER fxz.ratkinanomaly: IEnumerable`1 RatkinAnomaly.Background_PatchProjectSub:Transpiler(IEnumerable`1 instructions, ILGenerator generator) at RimWorld.MainTabWindow_Research.DrawLeftRect (UnityEngine.Rect leftOutRect) [0x0002a] in <cb53cd4422904947932d33f561ad8d15>:0 - PREFIX Leoltron.StoredResearch: Void Leoltron.StoredResearch.MainTabWindow_Research__DrawLeftRect__Patch:Prefix(MainTabWindow_Research __instance, Rect leftOutRect) - PREFIX com.ghxx.rimworld.techadvancing: Void TechAdvancing.TA_Research_Menu_Patch:Prefix(Rect leftOutRect) at RimWorld.MainTabWindow_Research.DoWindowContents (UnityEngine.Rect inRect) [0x000ad] in <cb53cd4422904947932d33f561ad8d15>:0 at Verse.Window.InnerWindowOnGUI (System.Int32 x) [0x001d3] in <cb53cd4422904947932d33f561ad8d15>:0 - TRANSPILER net.pardeike.rimworld.lib.harmony: IEnumerable`1 VisualExceptions.ExceptionsAndActivatorHandler:Transpiler(IEnumerable`1 instructions, MethodBase original)