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How do i fix: "Assertion failed on expression: 'm_InstanceID != InstanceID_None'"

Discussion in 'Editor & General Support' started by nicmarxp, Apr 28, 2020.

  1. nicmarxp

    nicmarxp

    Joined:
    Dec 3, 2017
    Posts:
    404
    Hi,
    I updated my project to 2019.3.11f1 and lot of the assets I use, and suddenly i started getting 5-6 of each of these when I enter play mode:
    Assertion failed on expression: 'm_InstanceID != InstanceID_None'
    Assertion failed on expression: 'instanceId != previousInstanceID'

    I read another thread that it could related to physics, but it doesn't give any reference to a gameobject, line of code or anything.

    How do I get rid of it? Also the editor started crashing abrubtly and it might be related to this, but I'm not sure.

    Thank you in advance!
     
    nicmarxp, Apr 28, 2020
    #1
    anycolourulike and Ignacii like this.

  2. nicmarxp

    nicmarxp

    Joined:
    Dec 3, 2017
    Posts:
    404
    I deleted the post processing volume and layer on my camera, and it went away and stopped crashing. So maybe the profile was corrupt.
     
    nicmarxp, Apr 28, 2020
    #2

  3. Ignacii

    Ignacii

    Joined:
    May 23, 2013
    Posts:
    91
    Hi! Disabling "Enter Play Mode Options (Experimental)" fixed the problem. But disabling Post Processing Layer and Volume also works.
     
    Last edited: Apr 28, 2020
    Ignacii, Apr 28, 2020
    #3

  4. nicmarxp

    nicmarxp

    Joined:
    Dec 3, 2017
    Posts:
    404
    Yeah exactly, i forgot to say that, Does that mean i can't use post process at the same time as the quick enter play mode?
     
    nicmarxp, Apr 28, 2020
    #4

  5. Ignacii

    Ignacii

    Joined:
    May 23, 2013
    Posts:
    91
    Well that's what I am gonna do. Need to report I guess
     
    Ignacii, Apr 28, 2020
    #5

  6. Ignacii

    Ignacii

    Joined:
    May 23, 2013
    Posts:
    91
    I don't think those errors are in any way destructive so I will keep using fast enter play mode function and enjoy those errors every time :D
     
    Ignacii, Apr 28, 2020
    #6

  7. spaceemotion

    spaceemotion

    Joined:
    Sep 29, 2015
    Posts:
    95
    Can confirm, on 2019.3.13f1 with Post Processing 2.3.0 we're getting both errors:

    Code (CSharp):
    1. Assertion failed on expression: 'm_InstanceID != InstanceID_None'
    2. Assertion failed on expression: 'instanceId != previousInstanceID'
    Checking the "Reload Scene" under "Enter Play Mode Settings" fixes that:

    upload_2020-5-23_19-46-13.png
     
    spaceemotion, May 23, 2020
    #7

  8. MelvMay

    MelvMay

    Unity Technologies

    Joined:
    May 24, 2013
    Posts:
    10,526
    Please note that this is a physics forum. Maybe try posting on a graphics forum instead.
     
    MelvMay, May 24, 2020
    #8

  9. jRocket

    jRocket

    Joined:
    Jul 12, 2012
    Posts:
    687
    Still happening in 2020.1.0b11. I think the root problem is the "Enter Play Mode Options", so not necessarily graphics related. I have submitted a bug report. Case #1254819
     
    jRocket, Jun 11, 2020
    #9
    Laiken, PrecisionCats, detzt and 1 other person like this.

  10. jjejj87

    jjejj87

    Joined:
    Feb 2, 2013
    Posts:
    1,106
    I can confirm this is happening in 2020.2b12. I am going to report it and see why it is still not fixed after all this time.
     
    jjejj87, Nov 23, 2020
    #10

  11. MelvMay

    MelvMay

    Unity Technologies

    Joined:
    May 24, 2013
    Posts:
    10,526
    Again, this is nothing to do with physics even though it's posted on the physics forums and I don't have real any knowledge on the subject however I did take a look for you and can confirm that the bug report 1254819 above was closed as a duplicate against the original report:

    https://issuetracker.unity3d.com/is...es-when-destroyimmediate-is-used-in-ondisable

    The original bug report was related to the Enter Play Mode Options. If it's not fixed and yours is related to the same then I'm sure it'll help. Of course, that error could be caused by many things so you might be assuming it's the same thing.

    You're better off posting on the Editor forums if you need to chase this.

    Your bug report alone will help determine that though so hopefully it'll get attended ASAP.
     
    Last edited: Nov 23, 2020
    MelvMay, Nov 23, 2020
    #11

  12. ilizzium

    ilizzium

    Joined:
    Aug 3, 2022
    Posts:
    2
    if anyone comes across this. the bug appeared due to the lack of cinemachinebrain on the camera when other objects used modules derived from it
     
    ilizzium, Jun 15, 2023
    #12