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Fixed in 2018.3

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

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. Response avatar

    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.

Comments (201)

  1. 46dce3f4dab914417a83e17d009e9316?d=mm

    Khitty

    Aug 01, 2018 22:04

    This just happened to me. Glad I'm not the only one. I was using the Serial Port class to get info from my Arduino. Hit play and the editor just closed. Had to look in the Editor-prev.log to figure out what happened. And I only did that because my callback function is no longer being called after restarting the editor =(

  2. C7a6dd634de6ae15f565604cfa61dcb1?d=mm

    mnwarren

    Jul 30, 2018 10:28

    Unity 2018.2.1f1 on Windows 10 x64 just crashed with the error reported in this issue.

  3. 4ee0c9e55184e63d7ae638e12220820a?d=mm

    giawa

    Jul 27, 2018 23:08

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

  4. 108621019618e64a02d41a8dc6780e78?d=mm

    alf1e

    Jul 27, 2018 13:02

    This happens to me too.
    Specifically, it happens more when I have two or more Inspector tabs on the go... and it will certainly happen if I hit play with both tabs open.

    Hope this helps.

  5. A3a43487ce4126a5c71e6126f32d5e71?d=mm

    hippocoder

    Jul 26, 2018 21:09

    Still happening happily disrupting my work in 2018.2.1 LTS

  6. 244f735ef429f85475b9430623900591?d=mm

    ehabroshdy

    Jul 25, 2018 04:23

    it occurs usually when pressing Play
    Version 2018.2.0f2.

  7. B0fa3645856a4713c7a83f12ae8005a0?d=mm

    Psyboyo

    Jul 24, 2018 13:58

    Happens frequently on 2018.2.0f2 (Windows)

  8. Ac9c12eed653580da8e4c037cfaeb5d7?d=mm

    xmastree

    Jul 21, 2018 09:46

    On 2018.2.0f2 (Windows) happens regulary

  9. Aa71f11e3b497c55557481044a6cf032?d=mm

    JohnnyFactor

    Jul 21, 2018 01:15

    I have gotten this error six (6) times since July 11, 2018. Always when pressing Play. Version 2018.2.0f2.

  10. Fdc1cf0865596a9098af6408fa557018?d=mm

    fuzzygoat

    Jul 19, 2018 15:03

    My Unity 2018.2.0f2 crashes this morning were on macOS High Sierra 10.13.6 (17G65)

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