This has happened to me twice. I am working on a Project Tiny scene when suddenly the scene seems to turn into a regular Unity scene. I no longer have the options to create or load entity groups in the hierarchy, everything appears as it would were I to create a regular Unity scene, and when I choose to create any Project Tiny assets in my scene I get the following error: NullReferenceException: Object reference not set to an instance of an object Unity.Tiny.EntityTemplateMenuItems.CreateAsRoot (System.String name, Unity.Tiny.EntityTemplate template) (at Library/PackageCachefirstname.lastname@example.org/Editor/EntityTemplates/EntityTemplateMenuItems.cs:72) Unity.Tiny.EntityTemplateMenuItems+<CreateWithContext>d__21.MoveNext () (at Library/PackageCacheemail@example.com/Editor/EntityTemplates/EntityTemplateMenuItems.cs:39) System.Collections.Generic.List`1[T]..ctor (System.Collections.Generic.IEnumerable`1[T] collection) (at <ac823e2bb42b41bda67924a45a0173c3>:0) System.Linq.Enumerable.ToList[TSource] (System.Collections.Generic.IEnumerable`1[T] source) (at <1b13ba6391c74847bbc3eddc86df7eee>:0) Unity.Tiny.EntityTemplateMenuItems.CreateWithContext (System.String name, Unity.Tiny.EntityTemplate template, System.Boolean alwaysAsRoot, Unity.Tiny.IRegistryObject context) (at Library/PackageCachefirstname.lastname@example.org/Editor/EntityTemplates/EntityTemplateMenuItems.cs:30) Unity.Tiny.EntityTemplateMenuItems.Sprite (Unity.Tiny.IRegistryObject context) (at Library/PackageCacheemail@example.com/Editor/EntityTemplates/EntityTemplateMenuItems.cs:115) Unity.Tiny.MenuItem_Sprite.Sprite () (at Library/PackageCachefirstname.lastname@example.org/Editor/Generated/MenuItems/MenuItem_Sprite.cs:17) UnityEditor.GenericMenu:CatchMenu(Object, String, Int32) I have tried reinstalling the Project Tiny package, but this didn't fix the problem. All other sample Project Tiny scenes open with no issues in the same project. This has happened rather abruptly both times, so I can't say for sure what exactly I was doing to trigger the problem, but I am fairly sure this has happened when I exit play mode. Any ways to fix this or tips to avoid it in the future would be appreciated.