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Steps to reproduce:
1. Create new Unity project using High Definition 3D Template
2. Press AI button on the top Editor toolbar and press “Agree and install Unity AI” button
3. Wait for package to finish installing and observe the Console
Actual results: Errors are thrown in the Console window
Expected results: No errors thrown in the Console window
Reproducible with versions: 1.5.0-pre.1 (6000.3.4f1, 6000.4.0b4, 6000.5.0a4)
Can’t test with versions: 6000.0.65f1 (No AI packages)
Tested on (OS): macOS Silicon Tahoe 26.2 (M1), Windows 11
Notes:
Errors:
Lifecycle ERROR : Failed to setup LifecycleManagement and enter code reload scopes (pre deserialization) due to exception System.NullReferenceException: Object reference not set to an instance of an object at Unity.Scripting.LifecycleManagement.OrderedAssemblyList.TopologicalSortRecursive (Unity.Scripting.LifecycleManagement.OrderedAssemblyList+SortNode[] sortNodes, System.Boolean[] visitedNodes, System.Int32 index, System.Reflection.Assembly[]& sortedNodes, System.Int32& sortedCount) [0x0002d] in /Users/bokken/build/output/unity/unity/External/ScriptingCore/Unity.Scripting/LifecycleManagement/OrderedAssemblyList.cs:139 at Unity.Scripting.LifecycleManagement.OrderedAssemblyList.TopologicalSort (System.Reflection.Assembly[]& assemblies) [0x00142] in /Users/bokken/build/output/unity/unity/External/ScriptingCore/Unity.Scripting/LifecycleManagement/OrderedAssemblyList.cs:127 at Unity.Scripting.LifecycleManagement.OrderedAssemblyList.Populate (System.Collections.Generic.IEnumerable`1[T] assemblies) [0x0001a] in /Users/bokken/build/output/unity/unity/External/ScriptingCore/Unity.Scripting/LifecycleManagement/OrderedAssemblyList.cs:49 at Unity.Scripting.LifecycleManagement.OrderedAssemblyList..ctor (System.Collections.Generic.IEnumerable`1[T] assemblies) [0x00011] in /Users/bokken/build/output/unity/unity/External/ ScriptingCore/Unity.Scripting/LifecycleManagement/OrderedAssemblyList.cs:32
NullReferenceException: Object reference not set to an instance of an object Unity.Scripting.LifecycleManagement.OrderedAssemblyList.TopologicalSortRecursive (Unity.Scripting.LifecycleManagement.OrderedAssemblyList+SortNode[] sortNodes, System.Boolean[] visitedNodes, System.Int32 index, System.Reflection.Assembly[]& sortedNodes, System.Int32& sortedCount) (at /Users/bokken/build/output/unity/unity/External/ScriptingCore/Unity.Scripting/LifecycleManagement/OrderedAssemblyList.cs:139) Unity.Scripting.LifecycleManagement.OrderedAssemblyList.TopologicalSort (System.Reflection.Assembly[]& assemblies) (at /Users/bokken/build/output/unity/unity/External/ScriptingCore/Unity.Scripting/LifecycleManagement/OrderedAssemblyList.cs:127) Unity.Scripting.LifecycleManagement.OrderedAssemblyList.Populate (System.Collections.Generic.IEnumerable`1[T] assemblies) (at /Users/bokken/build/output/unity/unity/External/ScriptingCore/Unity.Scripting/LifecycleManagement/OrderedAssemblyList.cs:49) Unity.Scripting.LifecycleManagement.OrderedAssemblyList..ctor (System.Collections.Generic.IEnumerable`1[T] assemblies) (at /Users/bokken/build/output/unity/unity/External/ScriptingCore/Unity.Scripting/LifecycleManagement/OrderedAssemblyList.cs:32)
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