Unity 6.4 change from InstanceID to EntityID problem

JRuiz

After upgrading Unity to 6.4 (6.4.5f1) from 6.3 (6.3.10f1), we can't drag&drop anything in hierarchy, even trying to drag from project to hierarchy it doesn't work and an error appears.
It seems that in 6.4 Unity changed how entityID works, now instead of a normal int (that Spine uses on SpineEditorUtilities lines 227 and 519) now uses int64 instead.
Tried on a new proyect (6.4.5f1) with only the latest Spine runtimes installed, and it fails just trying to move an object in hierarchy.

Here is the error:

ArgumentException: Object of type 'System.UInt64' cannot be converted to type 'System.Int32'.
System.RuntimeType.CheckValue (System.Object value, System.Reflection.Binder binder, System.Globalization.CultureInfo culture, System.Reflection.BindingFlags invokeAttr) (at <f713e1c3c5f545ce9b1df47230f4f853>:0)
System.Reflection.RuntimeMethodInfo.ConvertValues (System.Reflection.Binder binder, System.Object[] args, System.Reflection.ParameterInfo[] pinfo, System.Globalization.CultureInfo culture, System.Reflection.BindingFlags invokeAttr) (at <f713e1c3c5f545ce9b1df47230f4f853>:0)
System.Reflection.RuntimeMethodInfo.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <f713e1c3c5f545ce9b1df47230f4f853>:0)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at <f713e1c3c5f545ce9b1df47230f4f853>:0)
System.Delegate.DynamicInvokeImpl (System.Object[] args) (at <f713e1c3c5f545ce9b1df47230f4f853>:0)
System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args) (at <f713e1c3c5f545ce9b1df47230f4f853>:0)
System.Delegate.DynamicInvoke (System.Object[] args) (at <f713e1c3c5f545ce9b1df47230f4f853>:0)
UnityEditor.DragAndDrop.Drop (System.Int32 dropDstId, System.Object[] args) (at <5cd1e59afb2c420d8621a96062f56dea>:0)
UnityEditor.DragAndDrop.DropOnHierarchyWindow (UnityEngine.EntityId dropTargetEntityId, UnityEditor.HierarchyDropFlags dropMode, UnityEngine.Transform parentForDraggedObjects, System.Boolean perform) (at <5cd1e59afb2c420d8621a96062f56dea>:0)
Unity.Hierarchy.Editor.HierarchyGameObjectHandler.DoHandleDrop (Unity.Hierarchy.HierarchyViewDragAndDropHandlingData& data, System.Boolean perform) (at <c8cd0ca2a22d4a078cdc59400644a704>:0)
Unity.Hierarchy.Editor.HierarchyGameObjectHandler.Unity.Hierarchy.IHierarchyEditorNodeTypeHandler.CanDrop (Unity.Hierarchy.HierarchyViewDragAndDropHandlingData& data) (at <c8cd0ca2a22d4a078cdc59400644a704>:0)
Unity.Hierarchy.HierarchyViewDragHandler.HandleNodeHandlersDrop (Unity.Hierarchy.HierarchyViewDragHandler+HierarchyViewDragAndDropTargets dragAndDropTargets, UnityEngine.UIElements.DragAndDropData dragAndDropData, Unity.Hierarchy.HierarchyNode& parentNode, System.Boolean perform) (at <6239b889a44b41e2b7d28eb827fcfb60>:0)
Unity.Hierarchy.HierarchyViewDragHandler.GetVisualMode (UnityEngine.UIElements.HandleDragAndDropArgs& args) (at <6239b889a44b41e2b7d28eb827fcfb60>:0)
Unity.Hierarchy.HierarchyViewDragHandler.DragAndDropUpdate (UnityEngine.UIElements.HandleDragAndDropArgs args) (at <6239b889a44b41e2b7d28eb827fcfb60>:0)
UnityEngine.UIElements.HierarchyV2.CollectionView.RaiseHandleDragAndDrop (UnityEngine.Vector2 pointerPosition, UnityEngine.UIElements.DragAndDropArgs dragAndDropArgs) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0)
UnityEngine.UIElements.HierarchyV2.CollectionViewDragger.GetVisualMode (UnityEngine.Vector3 pointerPosition, UnityEngine.EventModifiers modifiers, UnityEngine.UIElements.HierarchyV2.CollectionViewDragger+DragPosition& dragPosition) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0)
UnityEngine.UIElements.HierarchyV2.CollectionViewDragger.UpdateDrag (UnityEngine.Vector3 pointerPosition, UnityEngine.EventModifiers modifiers) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0)
UnityEngine.UIElements.DragEventsProcessor.OnDragUpdate (UnityEngine.UIElements.DragUpdatedEvent evt) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0)
UnityEngine.UIElements.EventCallbackFunctor1[TEventType].Invoke (UnityEngine.UIElements.EventBase evt) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0) UnityEngine.UIElements.EventCallbackRegistry+DynamicCallbackList.Invoke (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel, UnityEngine.UIElements.VisualElement target) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0) UnityEngine.UIElements.EventDispatchUtilities.HandleEventAcrossPropagationPath (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel, UnityEngine.UIElements.VisualElement target, System.Boolean isCapturingTarget) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0) UnityEngine.UIElements.EventDispatchUtilities.DispatchToCapturingElementOrElementUnderPointer (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel, System.Int32 pointerId, UnityEngine.Vector2 position) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0) UnityEngine.UIElements.MouseEventBase1[T].Dispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0)
UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0)
UnityEngine.UIElements.EventDispatcher.Dispatch (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel, UnityEngine.UIElements.DispatchMode dispatchMode) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0)
UnityEngine.UIElements.BaseVisualElementPanel.SendEvent (UnityEngine.UIElements.EventBase e, UnityEngine.UIElements.DispatchMode dispatchMode) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0)
UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0)
UnityEngine.UIElements.UIElementsUtility.UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (UnityEngine.EntityId entityId, System.IntPtr nativeEventPtr, System.Boolean& eventHandled) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0)
UnityEngine.UIElements.UIEventRegistration.ProcessEvent (UnityEngine.EntityId entityId, System.IntPtr nativeEventPtr) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0)
UnityEngine.UIElements.UIEventRegistration+<>c.<.cctor>b__1_2 (UnityEngine.EntityId i, System.IntPtr ptr) (at <9e4c8e7022d34c0b8fe6be9c7b3c22df>:0)
UnityEngine.GUIUtility.ProcessEvent (UnityEngine.EntityId entityId, System.IntPtr nativeEventPtr, System.Boolean& result) (at <acda01d4940e4954ba798bbe5ce71a57>:0)!<

JRuiz

A temporal workarround i found its to change this lines:
#if UNITY_2021_2_OR_NEWER && !UNITY_6000_0_OR_NEWER
DragAndDrop.RemoveDropHandler(HierarchyHandler.HandleDragAndDrop);
DragAndDrop.AddDropHandler(HierarchyHandler.HandleDragAndDrop);
#elif !UNITY_2021_2_OR_NEWER

To deactivate the problem, but of course now i can't drag a skeletonData from project to hiearchy.

Harald

@JRuiz Yes, this has been reported on the forum before, and has already been fixed on the 4.3-beta branch. See the respective issue ticket here:
EsotericSoftware/spine-runtimes3059

I assume you are using 4.2? Please note that 4.2 is not compatible with Unity 6000.4 or newer. I'm sorry to say that we decided against back-porting the respective commit as it's potentially breaking existing projects.

JRuiz

Ok, thanks for the answer. Sorry for duplicating the report. I tried to find it, but my English skills aren't very good, heh.
Do you think it's safe enough to update to 4.3? Normally we avoid beta builds, but 4.3 comes with some interesting new features, apart from the fixes and support.

Harald

JRuiz Ok, thanks for the answer. Sorry for duplicating the report. I tried to find it, but my English skills aren't very good, heh.

No worries at all, sometimes forum search unfortunately does not provide the results it should.

If your project just upgraded to Unity 6.4, I would recommend switching to Spine 4.3, it will now really not be too long until 4.3 is out of beta. You can then benefit from a lot of new features on both the Editor and the runtimes side. Also judging from the current state, the 4.3 runtime will at least support Unity version up to 6.5. While Unity 6.5 is currently not officially supported yet (due to it being beta), we currently have no open bug reports for 6.5. If you should run into any issues with the latest beta Editor or runtime version and the latest Unity version, please do let us know so we can provide a fix as quickly as possible.

If you decide to stay on 4.2 while using Unity 6.4 or newer, you would need to apply the 4.3-beta commit manually to 4.2, and any subsequent bugfix commits which you might need for future Unity updates as well. So a lot more work on your side while losing the benefit of new features.