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Fixed in Unity 2018.3



Found in


Issue ID




Crash on PackedIntVector::PackInts<unsigned int> when entering play mode or importing assets

Graphics - General



Priority: 2Necessary for shipping a final release


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

How to reproduce:
1. Open "" project
2. Open "Lava Demo 2.unity" scene
3. Enter Play mode
4. If Unity didn't crash, Exit Play mode
5. Repeat steps 3-4

Actual result: Unity crashes

Reproducible with: 2018.3.3f1, 2018.3.1f1, 2018.3.0b8.
Regression introduced in: 2018.3.0b8.
Not reproducible with: 2018.2.20f1, 2018.3.0b7, 2019.1.0a1, 2019.2.0a1.

Sometimes the same crash happens on import.

Fixed in 2019.1.0a1, 2018.3.10f1.

There is another issue that some meshes are missing for the lava (that was the cause of the crash)
The issue was fixed on 2019.2.0a9 and 2019.1.0b8, 2018.3.10f1.

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