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Fixed in 2019.1.X

Duplicate in 2018.3.X



Found in


Issue ID




Dynamically loading Timeline from AssetBundle causes "Assertion failed on expression: 'pred(*previous, *i)"

Asset Bundles


Steps to reproduce:
1. Open user attached project
2. Play the scene
3. Observe the "Assertion failed on expression: 'pred(*previous, *i)'" in the console (if the error does not occur, relaunch the editor)

Expected result: "Assertion failed on expression: 'pred(*previous, *i)" should not appear when Timeline is loaded from an AssetBundle

Reproduced in: 2019.1.0b5, 2018.3.8f1, 2018.2.0a4, 2018.1.0b10, 2017.3.1p3 2017.2.0f3, 2017.1.3p2
Does not reproduce anymore in: 2019.2.0a8, 2019.1.0b6

Comments (20)

  1. JonathanBartel

    Oct 30, 2020 14:19

    Reproduced in 2019.4.10f1 and 2019.4.13f1

  2. yingyuqingyang

    Sep 28, 2020 06:25

    Still reproduce on 2019.4.6f1

  3. cozyurt_unity

    Jul 15, 2020 11:57

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  4. LiQinming_Pwrd

    Jul 15, 2020 03:06

    still happens on 2019.4.2f1

  5. xraycaster

    Jul 11, 2020 04:28

    It happens to me also with 2019.4.2f1.

  6. justcallmevincent

    Apr 26, 2020 10:34

    still reproduce on 2019.3.10f1

  7. phobos2077

    Apr 17, 2020 15:21

    Still reproduced in 2019.3.9f1. Is there any known workaround?

  8. JonathanBartel

    Mar 24, 2020 12:10

    I'm getting this error periodically since updating to 2019.3.

  9. harady

    May 15, 2019 09:50

    Reproduced in Unity 2018.3.12f1,too

  10. harady

    May 15, 2019 09:49

    Reproduced in Unity 2018.3.12f1,too

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