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Fixed in 2019.2.X

Fixed in 2017.4.X, 2018.3.X, 2019.1.X



Found in



Issue ID




"Sub-emitters must be children of the system that spawns them" error is shown even though sub-emitters are correctly parented



How to reproduce:
1. Open "EmitterIssue" project and "test stage 1..." scene
2. Enter playmode and pause it
3. Observe "Sub-emitters must be children of the system that spawns them" error appearing
4. Double click on the error in the console, it highlights "Debris" GameObject that has two sub-emitters "DebrisSmoke" and "DerisFire" that are correctly parented under "Debris" GameObject

Expected result: Error should not be shown, since "DebrisSmoke" and "DerisFire" sub-emitters are correctly parented under "Debris" GameObject as required in 5.6+ versions

Regression introduced in - 2017.2.0b1
Reproducible with - 2017.3.0a7, 2017.2.0b11, 2017.2.0b1
Not reproducible with - 2017.1.0p2, 2017.2.0a4

Note - Deleting some of the "MediumExplosionFX" prefabs, fixes the issue

  1. Response avatar


    Jan 25, 2019

    We are currently testing a fix for this issue.

Comments (14)

  1. Fd4377ab80a8e5f207d2b403533eb28c?d=mm


    Jul 20, 2018 14:02

    I am seeing this issue on 2017.3.1.f1 Personal... It started happening today after I opened up my project. No changes had been made, so I can't give you any helpful steps to reproduce it. It doesn't seem to break anything though, just has an error message.

    It it highlighting a regular scene object and the sub-emitters are clearly child objects of the system. Hope that helps.

  2. B388a33b7f780c80e1d9dd1efc66d2f2?d=mm


    Jul 12, 2018 12:07

    I have this as well in 2018.1.6. Doesn't seem to affect anything. Just displaying a error message.

  3. D4b06d78069fca3f00ca1c29c322b2f3?d=mm


    Mar 28, 2018 13:31

    Update: even though these are being instaniated from a prefab, i have found that when many are spawned the children are actually being assigned to the wrong parent which is triggering the error. once they are all spawned while in play mode, if you look at one of the parent particle systems in the scene and then go under subemitters and click the linked gameobject in the field it will highlight the child emitters location in the scene hierarchy and you can see it will be under the wrong parent and not the expected parent.

  4. D4b06d78069fca3f00ca1c29c322b2f3?d=mm


    Mar 22, 2018 21:18

    I am having this seem issue in 2017.3.1p4, when spawned the sub emitters are correctly parented to the particle system that spawns them yet it produces this error. If I drag the prefab directly into the scene it doesnt produce the error but when it is instantiated it does.

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