"Object of type 'System.UInt64' cannot be converted to type 'System.Int32'" error when dragging a GameObject from the Hierarchy window

6.6.X

Third Party Issue

Thank you for reporting a bug to Unity. Our investigation indicates the issue originates from a third-party asset, plugin, or service, rather than Unity itself. Because the problem lies outside our codebase, we're unable to address it directly. Please see these posts for more information: https://discussions.unity.com/t/hierarchy-is-completely-broken/1713649 https://discussions.unity.com/t/cant-drag-and-drop-anything-in-the-hierarchy-in-unity-6-4 We will close this case as a third-party issue. We recommend contacting the vendor or maintainer for support. If you have evidence that the issue is within Unity, please share it and we will re-open the investigation.