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Fixed in 2018.3.X

Fixed in 5.5.X, 5.6.X, 2017.1.X, 2017.2.X, 2018.1.X, 2018.2.X

Votes

334

Found in

5.6.0b5

2017.1.0f3

Issue ID

873467

Regression

Yes

Unity throws out Fatal Error: Callback registration failed kMaxCallback

Themes

-

Unity throws out Fatal Error: "Callback registration failed kMaxCallback" after working with the project for 30 minutes or more. It appears randomly.

Steps:
1. Actively use Unity for more than 30 minutes

Actual: Unity continues to work
Result: Unity crashes with Fatal Error.

Reproducible with: 2017.1.4f1, 2017.2.3p1, 2017.4.4f1, 2018.1.3f1, 2018.2.0b6

Note:
Reproduced on macOS, Windows, Linux.
Bug Report window does not appear.
Scene files are not restored after reopening Unity so all not saved Scenes are lost.

  1. karl_jones

    Jan 04, 2019

    Please file a new bug report If you are still encountering this problem. The error message is a symptom and can be caused by many different areas. The area for this bug has been fixed.

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Comments (203)

  1. nobelxer

    Aug 12, 2018 13:32

    same here, keep crashing at random moments after saving a script in VS2017...

  2. phmello8

    Aug 10, 2018 20:49

    It keeps happening to me, it's not fixed. 2018.2.2f1.
    Just like GIAWA said, it randomly crashes when coming back from editing scripts, for me in MonoDevelop.

  3. jet-pack

    Aug 07, 2018 12:36

    Happens to me every 4-8 hours. 2018.2.0f2, Windows 10.

  4. Canabinoide-Games

    Aug 05, 2018 18:00

    still happens to me on 2018.2.2f1
    approximately 1 out of 10 times i click on play to test my game, the crash comes.

  5. hippocoder

    Aug 04, 2018 12:17

    "Fixed in future release" but it would be really nice to know what fixes it. This is so if we get a bug in future, we can at least immediately test that case as well, to better create repro cases.

  6. Eldrix

    Aug 04, 2018 02:52

    Happened today in Unity 2018.2.2f1 after working in Unity for a couple hours. I luckily just saved my project.

  7. Linkupdated

    Aug 04, 2018 01:15

    Still happens in unity 2018.2.0f2

  8. Broendholt

    Aug 02, 2018 21:33

    After setting to Colors (Color) as public variables and saving the script (MonoBehaviour) The fatal error happened.
    Unity had been open for around 5 hours.

  9. dccatalin

    Aug 02, 2018 19:26

    Happens to me in 2018.2.0f2 (Windows), usually when recompiling scripts after editing in Visual Studio. Using latest Unity extensions for Visual Studio.

  10. DeadHandInteractive

    Aug 02, 2018 19:07

    Happened to me when editing cloth weights in Cloth component

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