Crash on Save

[MCVenor]

Release Type: Official Release
Version: 4.1.0.1948

Platform(s): Windows 10 Pro

Describe the bug
I hit Ctrl+S and the bug apears.

To Reproduce
Steps to reproduce the behavior:

1. Create basic Project from YT Tutorial
2. Delete everything
3. Delete Scene assets too
4. place some objects and play around with the values
5. Hit Ctrl+S

Screenshots

Log and callstacks
Error: There was a problem saving the solution. Value cannot be null. (Parameter 'value')
ArgumentNullException: Value cannot be null. (Parameter 'value')
at System.IO.BinaryWriter.Write(String value)
at Stride.Core.Assets.AssetReferenceDataSerializer.Serialize(AssetReference& assetReference, ArchiveMode mode, SerializationStream stream) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\assets\Stride.Core.Assets\AssetReferenceDataSerializer.cs:line 29
at Stride.Core.Serialization.MemberReuseSerializer1.Serialize(T& obj, ArchiveMode mode, SerializationStream stream) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\core\Stride.Core\Serialization\MemberSerializerGenerated.cs:line 1122 at Stride.Core.Serialization.Serializers.KeyedSortedListSerializer3.Serialize(TKeyedList& obj, ArchiveMode mode, SerializationStream stream) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\core\Stride.Core\Serialization\Serializers\KeyedSortedListSerializer.cs:line 50
at Stride.Core.Serialization.MemberReuseSerializer1.Serialize(T& obj, ArchiveMode mode, SerializationStream stream) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\core\Stride.Core\Serialization\MemberSerializerGenerated.cs:line 1122 at Stride.Core.DataSerializers.StrideCoreAssets_PackageSerializer.Serialize(Package& obj, ArchiveMode mode, SerializationStream stream) at Stride.Core.Serialization.DataSerializer1.Serialize(Object& obj, ArchiveMode mode, SerializationStream stream) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\core\Stride.Core\Serialization\DataSerializer.cs:line 85
at Stride.Core.Serialization.MemberReuseSerializer1.SerializeExtended(T& obj, ArchiveMode mode, SerializationStream stream, DataSerializer1 dataSerializer) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\core\Stride.Core\Serialization\MemberSerializerGenerated.cs:line 1317
at Stride.Core.Assets.AssetCloner..ctor(Object value, AssetClonerFlags flags, IEnumerable`1 externalIdentifiables) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\assets\Stride.Core.Assets\AssetCloner.cs:line 78
at Stride.Core.Assets.Package.Clone() in C:\BuildAgent\work\b5f46e3c4829a09e\sources\assets\Stride.Core.Assets\Package.cs:line 387
at Stride.Core.Assets.PackageSession.Save(ILogger log, PackageSaveParameters saveParameters) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\assets\Stride.Core.Assets\PackageSession.cs:line 1107
at Stride.Core.Assets.Editor.ViewModel.SessionViewModel.<>c__DisplayClass194_0.b__0() in C:\BuildAgent\work\b5f46e3c4829a09e\sources\editor\Stride.Core.Assets.Editor\ViewModel\SessionViewModel.cs:line 924

Additional context
After watching the tutorials i wanted to try around in the editor to get a feel. I deleted everything from the basic tutorial scenery, i also deleted the scenes in the assets. Added 2 empty entities in the current main scene, made 1 cube with no material in the assets, 1 plane with metalic blue material and added both to the scene. Then i added a directional light and a point light.
The directional light was repositioned and then the Point lights radius was adjusted with the mouse first, but it was to wild of an increase, so i typed a number instead, 10.
I noticed that the alt key did not allow me to orbit in the Viewport when alt was pressed either outside of before the Viewport focus/under mouse. Then i hit Ctrl+S and the bug popped. I thought its because the cube without material, deleted it, tried again, same problem.
Then i deleted some assets , same problem still.

[JeromyWalsh]

Hi @MCVenor. Which tutorial were you following? At what point in the tutorial did you delete everything?

[MCVenor]

The tutorial has no part in this as in the tutorial did not instruct me to delete everything. This is just to give a context where i got the initial scene/project from
This is the tutorial in question LINK
In this tutorial we create a project from a predefined selection

Edit: ups didnt awnser the second question.
"At what point in the tutorial did you delete everything?"
I was not coding along in the tutorials, the project as strict made from the predefined selection (min 1:45 in First Video). So at no point did i delete everything during the tutorial. It was just make new -> delete all -> save crash, in a nutshell.

[JeromyWalsh]

Hi @MCVenor, I completely understand the tutorial didn't instruct you to delete everything.

The exception is likely a result of something not properly being cleaned up after it was deleted. So, knowing what you'd done before deleting will help speedup the process of isolating the problem.

[jhimes144]

I'm able to recreate this bug. I run into it quiet frequently.

[IXLLEGACYIXL]

I'm able to recreate this bug. I run into it quiet frequently.

does it happen by not pressing ctrl s so long?