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[IET] Editor crashes with "The file 'MemoryStream' is corrupted!" when entering Play Mode in any interactive tutorial

Editor - Other



Priority: 2Necessary for shipping a final release


Severity: 1Crash, freeze, data loss, work stops

Editor crashes with "The file 'MemoryStream' is corrupted!" when entering Play Mode in any interactive tutorial.

Steps to repro:
1. Open Unity Hub.
2. Go to the Learn section.
3. Download any tutorial > start.
4. Resolve error in the console (MinAttribute).
5. Enter Play Mode

Actual Result:
Editor crashes with "The file 'MemoryStream' is corrupted!"

Expected Result:
Interactive Tutorial starts.

Reproducible on:
2019.2.0a11, 2019.1.0f1, 2019.1.0b3

Works fine on:
2019.1.0b2, 2018.3.0f2

Windows and MacOS

1. Before entering in Play Mode, editor spams with the following error.

TypeLoadException: Could not resolve type with token 0100000e (from typeref, class/assembly UnityEngine.Experimental.UIElements.VisualElement, UnityEngine, Version=, Culture=neutral, PublicKeyToken=null)
Unity.InteractiveTutorials.TutorialWindow.ApplyMaskingSettings (System.Boolean applyMask) (at Assets/Framework/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:629)
Unity.InteractiveTutorials.TutorialWindow.ApplyQueuedMask () (at Assets/Framework/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:351)
UnityEditor.EditorApplication.Internal_CallUpdateFunctions () (at C:/buildslave/unity/build/Editor/Mono/EditorApplication.cs:294)

2. Refer Attached video.

Comments (1)

  1. 39afef3a164aa76a13bb6f69c872ee3e?d=mm


    May 05, 2019 08:48

    Can confirm this is happening in version 2019.1.1f1 Personal (windows 10), happens with any "getting started" tutorials.

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