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Won't Fix

Fix In Review for 2020.1

Votes

0

Found in

2019.3.0a1

2019.3.5f1

Issue ID

1228192

Regression

Yes

Unity YAML Upgrading project to 2019.3 Asset Database V2 makes the project crash on startup

Asset Import Pipeline

-

Reproduction steps:
1. Create a new project with 2019.2.0a14 (Asset Database V1)
2. Import Package "pref.unitypackage" (note 1)
3. Ignore errors in the console
4. Try to upgrade the project to 2019.3 (prompt to update to Asset Database V2)

Unexpected behaviour: Unity crashes!

5. Open the project in 2019.2.0a14 again
6. Delete prefab "ModelPlacement2D"
7. Upgrade the project to 2019.3 (Asset Database V2)

The project successfully launches (note 2)

Reproducible with: 2019.3.0a1, 2019.3.14f1
Not reproducible with: 2019.2.21f1, 2020.1.0b8, 2020.2.0a10

Notes:
1. The package is "ModelPlacement2D" prefab exported from the user's project
2. In users original project this corrupts all Scene and Prefab files (check image001)
3. The 2019.2 version can be anything (tested 2019.2.0a14, 2019.2.17f1, 2019.2.21f1)

  1. Response avatar

    Resolution Note:

    The root cause of the issue was commented out YAML. Unity YAML for performance concerns only support a subset of the YAML language and comments are not part of this subset. For more information on Unity YAML https://docs.unity3d.com/Manual/UnityYAML.html

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