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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. Fdc1cf0865596a9098af6408fa557018?d=mm

    fuzzygoat

    Jul 19, 2018 15:01

    Same here in Unity 2018.2.0f2, crashed twice this morning, lost about 30mins unsaved work, very annoying.

  2. 56bfbdf95c9e2db66de123453d460f68?d=mm

    Jared-Vargason

    Jul 18, 2018 22:17

    I've gotten this twice on 2018.2.0f2 (Windows) in the last week or so. My experience was like that of AMISNER2K

  3. 5a8b0099664af3de8018a3521b7921b3?d=mm

    JimeoWan

    Jul 18, 2018 11:19

    I also have it occasionnally on 2018.2.0f2 (Windows).

  4. 4cd0e2faef268b388e8fb72765514b13?d=mm

    melting_pot

    Jul 17, 2018 08:06

    Just got this in 2018.2.0f2 after editing a script and clicking play in the editor.

  5. 86945bad0e4e1c1fc35f5c1658ea9aab?d=mm

    td-lambda

    Jul 15, 2018 06:59

    I can also confirm this is still happening in 2018.2.0f2

  6. 16d6831dec499dd14a12ef44ec44ecd4?d=mm

    amisner2k

    Jul 14, 2018 07:57

    For me it happened while recompiling scripts after having just saved a script in Visual Studio and alt-tabbing back to Unity...during my session I had made frequent tests in Play Mode (clicking the Play button a lot)...after about 30 or so minutes...the issue occurred.

  7. 16d6831dec499dd14a12ef44ec44ecd4?d=mm

    amisner2k

    Jul 14, 2018 07:53

    This also just happened for me on 2018.2.0f2

  8. 4ac01c722a5c442aa98b739f64d3d3a0?d=mm

    AA-Matt

    Jul 14, 2018 07:35

    Also just got this on 2018.2.0f2

  9. 3b7fd48aeb4339e1806181b7884013cf?d=mm

    ZenithSal

    Jul 13, 2018 13:30

    Issue just happened in 2018.2.0f2, so still here.

  10. 6ccd3943c6ddf2b79c399f539c2d4c14?d=mm

    asd234w4r5

    Jul 12, 2018 17:31

    2018.2 official release, still getting the error randomly

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