IDK

[NEFONTAN]

[Error : HarmonyX] Failed to patch void Player::SetupPlacementGhost(): System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
at System.ThrowHelper.ThrowArgumentOutOfRangeException (System.ExceptionArgument argument, System.ExceptionResource resource) [0x00029] in <695d1cc93cca45069c528c15c9fdd749>:0
at System.ThrowHelper.ThrowArgumentOutOfRangeException () [0x00000] in <695d1cc93cca45069c528c15c9fdd749>:0
at System.Collections.Generic.List1[T].set_Item (System.Int32 index, T value) [0x00009] in <695d1cc93cca45069c528c15c9fdd749>:0 at HarmonyLib.CodeMatcher.SetInstruction (HarmonyLib.CodeInstruction instruction) [0x0000c] in <474744d65d8e460fa08cd5fd82b5d65f>:0 at HarmonyLib.CodeMatcher.SetInstructionAndAdvance (HarmonyLib.CodeInstruction instruction) [0x00000] in <474744d65d8e460fa08cd5fd82b5d65f>:0 at HammerExtender.Patches.PlayerPatch.SetupPlacementGhostTranspiler (System.Collections.Generic.IEnumerable1[T] instructions) [0x0008d] in <0b21aef4137e42d5976b967bd866bdea>:0
at (wrapper managed-to-native) System.Reflection.MonoMethod.InternalInvoke(System.Reflection.MonoMethod,object,object[],System.Exception&)
at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00032] in <695d1cc93cca45069c528c15c9fdd749>:0
--- End of inner exception stack trace ---
at System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00048] in <695d1cc93cca45069c528c15c9fdd749>:0
at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in <695d1cc93cca45069c528c15c9fdd749>:0
at HarmonyLib.Internal.Patching.ILManipulator.ApplyTranspilers (System.Reflection.Emit.ILGenerator il, System.Reflection.MethodBase original, System.Func2[T,TResult] getLocal, System.Func1[TResult] defineLabel) [0x00093] in <474744d65d8e460fa08cd5fd82b5d65f>:0
at HarmonyLib.Internal.Patching.ILManipulator.WriteTo (Mono.Cecil.Cil.MethodBody body, System.Reflection.MethodBase original) [0x00066] in <474744d65d8e460fa08cd5fd82b5d65f>:0
at HarmonyLib.Public.Patching.HarmonyManipulator.WriteTranspilers () [0x00084] in <474744d65d8e460fa08cd5fd82b5d65f>:0
at HarmonyLib.Public.Patching.HarmonyManipulator.WriteImpl () [0x0002b] in <474744d65d8e460fa08cd5fd82b5d65f>:0
[Error : Unity Log] ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
Stack trace:
System.ThrowHelper.ThrowArgumentOutOfRangeException (System.ExceptionArgument argument, System.ExceptionResource resource) (at <695d1cc93cca45069c528c15c9fdd749>:0)
System.ThrowHelper.ThrowArgumentOutOfRangeException () (at <695d1cc93cca45069c528c15c9fdd749>:0)
System.Collections.Generic.List1[T].set_Item (System.Int32 index, T value) (at <695d1cc93cca45069c528c15c9fdd749>:0) HarmonyLib.CodeMatcher.SetInstruction (HarmonyLib.CodeInstruction instruction) (at <474744d65d8e460fa08cd5fd82b5d65f>:0) HarmonyLib.CodeMatcher.SetInstructionAndAdvance (HarmonyLib.CodeInstruction instruction) (at <474744d65d8e460fa08cd5fd82b5d65f>:0) HammerExtender.Patches.PlayerPatch.SetupPlacementGhostTranspiler (System.Collections.Generic.IEnumerable1[T] instructions) (at <0b21aef4137e42d5976b967bd866bdea>:0)
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <695d1cc93cca45069c528c15c9fdd749>:0)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <695d1cc93cca45069c528c15c9fdd749>:0)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at <695d1cc93cca45069c528c15c9fdd749>:0)
HarmonyLib.Internal.Patching.ILManipulator.ApplyTranspilers (System.Reflection.Emit.ILGenerator il, System.Reflection.MethodBase original, System.Func2[T,TResult] getLocal, System.Func1[TResult] defineLabel) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.Internal.Patching.ILManipulator.WriteTo (Mono.Cecil.Cil.MethodBody body, System.Reflection.MethodBase original) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.Public.Patching.HarmonyManipulator.WriteTranspilers () (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.Public.Patching.HarmonyManipulator.WriteImpl () (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
Rethrow as HarmonyException: IL Compile Error (unknown location)
HarmonyLib.Public.Patching.HarmonyManipulator.WriteImpl () (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.Public.Patching.HarmonyManipulator.Process (MonoMod.Cil.ILContext ilContext, System.Reflection.MethodBase originalMethod) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.Public.Patching.HarmonyManipulator.Manipulate (System.Reflection.MethodBase original, HarmonyLib.PatchInfo patchInfo, MonoMod.Cil.ILContext ctx) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.Public.Patching.HarmonyManipulator.Manipulate (System.Reflection.MethodBase original, MonoMod.Cil.ILContext ctx) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.Public.Patching.ManagedMethodPatcher.Manipulator (MonoMod.Cil.ILContext ctx) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
MonoMod.Cil.ILContext.Invoke (MonoMod.Cil.ILContext+Manipulator manip) (at <6733e342b5b549bba815373898724469>:0)
MonoMod.RuntimeDetour.ILHook+Context.InvokeManipulator (Mono.Cecil.MethodDefinition def, MonoMod.Cil.ILContext+Manipulator cb) (at <4e2760c7517c4ea79c633d67e84b319f>:0)
(wrapper dynamic-method) MonoMod.RuntimeDetour.ILHook+Context.DMD<MonoMod.RuntimeDetour.ILHook+Context::Refresh>(MonoMod.RuntimeDetour.ILHook/Context)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition.Trampoline<MonoMod.RuntimeDetour.ILHook+Context::Refresh>?18040832(object)
HarmonyLib.Internal.RuntimeFixes.StackTraceFixes.OnILChainRefresh (System.Object self) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
MonoMod.RuntimeDetour.ILHook.Apply () (at <4e2760c7517c4ea79c633d67e84b319f>:0)
HarmonyLib.Public.Patching.ManagedMethodPatcher.DetourTo (System.Reflection.MethodBase replacement) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
Rethrow as HarmonyException: IL Compile Error (unknown location)
HarmonyLib.Public.Patching.ManagedMethodPatcher.DetourTo (System.Reflection.MethodBase replacement) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.PatchFunctions.UpdateWrapper (System.Reflection.MethodBase original, HarmonyLib.PatchInfo patchInfo) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
Rethrow as HarmonyException: IL Compile Error (unknown location)
HarmonyLib.PatchClassProcessor.ReportException (System.Exception exception, System.Reflection.MethodBase original) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.PatchClassProcessor.Patch () (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.Harmony.b__11_0 (System.Type type) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.CollectionExtensions.Do[T] (System.Collections.Generic.IEnumerable1[T] sequence, System.Action1[T] action) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.Harmony.PatchAll (System.Reflection.Assembly assembly) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HarmonyLib.Harmony.CreateAndPatchAll (System.Reflection.Assembly assembly, System.String harmonyInstanceId) (at <474744d65d8e460fa08cd5fd82b5d65f>:0)
HammerExtender.HammerExtender.Awake () (at <0b21aef4137e42d5976b967bd866bdea>:0)
UnityEngine.GameObject:AddComponent(Type)
BepInEx.Bootstrap.Chainloader:Start()
UnityEngine.UI.Image:OnCanvasHierarchyChanged()

[ManlyMarco]

Can you give more information? Are you trying to run a modpack or a mod from somewhere or developing your own? Are you using latest HarmonyX build? If you're using someone else's plugin and release version of HarmonyX then contact the author or modding community for that game instead.

[jshepler]

Reading the stack trace, the exception is caused by HarmonyLib.CodeMatcher.SetInstruction (HarmonyLib.CodeInstruction instruction).

https://github.com/BepInEx/HarmonyX/blob/master/Harmony/Tools/CodeMatcher/CodeMatcher.cs#L277

Since that method does NOT validate Pos first, it will throw index out of range exception whenever IsInvalid is true, i.e. a matchforward/backward fails or is the very first operation done. That method (and others) should be coded more defensively and give much better exception reporting, imo.