5.4.18 Edit Animation Bug (breaks editor)

So I just went in to change an animation event call, and when I click on the animation even, I get this error:

Code (csharp):

1.  
2. AmbiguousMatchException: Ambiguous matching in method resolution
3. System.Reflection.Binder.FindMostDerivedMatch (System.Reflection.MethodBase[] match) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/Binder.cs:106)
4. System.MonoType.GetMethodImpl (System.String name, BindingFlags bindingAttr, System.Reflection.Binder binder, CallingConventions callConvention, System.Type[] types, System.Reflection.ParameterModifier[] modifiers) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System/MonoType.cs:245)
5. System.Type.GetMethod (System.String name, BindingFlags bindingAttr) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System/Type.cs:787)
6. UnityEditor.AnimationEventPopup.FormatEvent (UnityEngine.GameObject root, UnityEngine.AnimationEvent evt) (at C:/buildslave/unity/build/Editor/Mono/Animation/AnimationWindow/AnimationEventPopup.cs:147)
7. UnityEditor.AnimationEventTimeLine.EventLineGUI (Rect rect, UnityEditorInternal.AnimationWindowState state) (at C:/buildslave/unity/build/Editor/Mono/Animation/AnimationWindow/Deprecated/AnimationEventTimeline.cs:150)
8. UnityEditor.AnimEditor.EventLineOnGUI (Rect eventsRect) (at C:/buildslave/unity/build/Editor/Mono/Animation/AnimationWindow/AnimEditor.cs:392)
9. UnityEditor.AnimEditor.OnAnimEditorGUI (UnityEditor.EditorWindow parent, Rect position) (at C:/buildslave/unity/build/Editor/Mono/Animation/AnimationWindow/AnimEditor.cs:181)
10. UnityEditor.AnimationWindow.OnGUI () (at C:/buildslave/unity/build/Editor/Mono/Animation/AnimationWindow/AnimationWindow.cs:63)
11. System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)
12.  

Not sure what it means really, but thought it should be noted. Can't change anything in the animation tab after that and the editor doesn't seem to want to do a ton until it's been restarted.

Got a video showing what happens: (easily repeatable)

 

So.... overloading functions doesn't work in the animation window now? That's rather annoying.

(honestly, I made the second overloaded function after setting up the animation events, but still, I don't see why overloading a function would break it.)

 

I ran into this in a 5.3 release as well; nice to know it's due to overloads. But agreed that overloaded functions should work.