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ArgumentException on Add Component inside of Prefab

Discussion in 'Editor & General Support' started by MrConkin, Feb 12, 2019.

  1. MrConkin

    MrConkin

    Joined:
    Feb 11, 2013
    Posts:
    20
    I recently updated to 2018.3.4f1 and am encountering an issue where attempting to add a component inside of a prefab throws an argument exception. Any attempt to then add a component to any game object outside of the prefab also begins throwing the same exception until I restart Unity. Is this a known issue?

    "ArgumentException: An element with the same key already exists in the dictionary." (details below)

    https://pastebin.com/embed_js/Hngi00qQ
     
    MrConkin, Feb 12, 2019
    #1
    Avinash-pdy likes this.

  2. Avinash-pdy

    Avinash-pdy

    Joined:
    Mar 4, 2013
    Posts:
    27
    I am getting the same exception on Unity 2018.4.0f1. After opening a prefab, i am not able to add a component to any game object. I get below exception

     
    Avinash-pdy, May 21, 2019
    #2

  3. Avinash-pdy

    Avinash-pdy

    Joined:
    Mar 4, 2013
    Posts:
    27
    I found a workaround for this problem. Quit Unity and Visual Studio. Restart the project. It started working for me. Hope it helps
     
    Avinash-pdy, May 21, 2019
    #3