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updating to 2.40 throws Error: Assembly has reference to non-existent assembly 'Unity.Timeline'

Discussion in 'Cinemachine' started by Jean-Fabre, Jan 17, 2020.

  1. Jean-Fabre

    Jean-Fabre

    Joined:
    Sep 6, 2007
    Posts:
    429
    Hi,

    Trying to update cinemachine to 2.4.0 but I get this:

    Assembly has reference to non-existent assembly 'Unity.Timeline' (Packages/com.unity.cinemachine/Runtime/com.unity.cinemachine.asmdef)

    Assembly has reference to non-existent assembly 'Unity.Timeline' (Packages/com.unity.cinemachine/Editor/com.unity.cinemachine.Editor.asmdef)


    I can revert to 2.2.9 fine

    I am on mac with Unity 2018.4.4f1

    Bye,

    Jean
     
    Jean-Fabre, Jan 17, 2020
    #1

  2. andreasdkt

    andreasdkt

    Joined:
    Aug 31, 2013
    Posts:
    12
    Same problem here. Both macOS and Windows 10. Unity 2018.4.5f1
     
    andreasdkt, Jan 17, 2020
    #2

  3. Gregoryl

    Gregoryl

    Unity Technologies

    Joined:
    Dec 22, 2016
    Posts:
    7,268
    This is due to older versions of Unity 2018.4 not supporting packages with optional dependencies on Timeline.
    If you upgrade unity to the latest 2018.4 LTS version (currently 2018.4.15f1), this problem will go away.
    For earlier versions of Unity, CM 2.2.9 must be used.
     
    Gregoryl, Jan 20, 2020
    #3
    Weariervaris, FM-Productions, iSinner and 3 others like this.

  4. Jean-Fabre

    Jean-Fabre

    Joined:
    Sep 6, 2007
    Posts:
    429
    Hi,

    ok, thanks for the explanations,

    Bye,

    Jean
     
    Jean-Fabre, Jan 22, 2020
    #4

  5. salimas

    salimas

    Joined:
    Feb 11, 2020
    Posts:
    1
    hi , i currently have the 2018 4.8 and i have the same problem
     
    salimas, Feb 28, 2020
    #5

  6. Gregoryl

    Gregoryl

    Unity Technologies

    Joined:
    Dec 22, 2016
    Posts:
    7,268
    You need to upgrade your 2018.4 to at least 17f1 to support the latest CM versions
     
    Gregoryl, Feb 28, 2020
    #6

  7. thechosen1_unity

    thechosen1_unity

    Joined:
    May 31, 2020
    Posts:
    3
    how can i revert the latest version into 2.2.9 version?
     
    thechosen1_unity, Jun 1, 2020
    #7

  8. Gregoryl

    Gregoryl

    Unity Technologies

    Joined:
    Dec 22, 2016
    Posts:
    7,268
    The packman UI won't allow it, but you can manually edit the package.json file to put whatever version you want. Use at your own risk.
     
    Gregoryl, Jun 9, 2020
    #8
    thechosen1_unity likes this.

  9. dizzymediainc

    dizzymediainc

    Joined:
    Apr 6, 2014
    Posts:
    409
    I have the same issue with 2018.4.5, installed CM 2.7.1
     
    dizzymediainc, Jan 30, 2021
    #9

  10. fahimulbari

    fahimulbari

    Joined:
    Jan 10, 2021
    Posts:
    1
    This is an older problem. But I made a video on this for myself, because I couldn't find one. So sharing it with you guys. If it helps.
    Youtube:

     
    fahimulbari, Sep 26, 2021
    #10