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Veronica22551996i6fw
Known Participant
Jun 16, 2025 6:17 PM UTC
Answered

CSXS Event Warning

I have never had a warning pop up in InDesign before. 

 

"CSXSEvent does not have a constructor
Do you want to disable this event handler?

"

Can you tell me what this means and how to fix it? It looks like InDesign just updated today to 20.4. I am on a Mac (if that is important)

Abhishek Rao
Abhishek RaoCorrect answer
Community Manager
Jun 25, 2025 3:41 PM UTC

Hi @Veronica22551996i6fw,

 

Thanks for reporting this! The warning you're seeing related to CSXSEvent was identified and addressed by the product team.

We recommend updating to the latest InDesign 20.4.1 release, which includes fixes for this issue. Once you've updated, please test your workflow and let us know if the warning still appears.

 

We'd appreciate an update on your experience so we can confirm the fix is working as expected.

Abhishek

 

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3 replies

Community Expert
Manan JoshiCommunity Expert
Community Expert
Jun 17, 2025 4:09 AM UTC

This seems to be a bug that is being reported by others as well. See the discussion at https://community.adobe.com/t5/indesign-discussions/cep-plugin-ioerror-when-loading-plugplugexternalobject-in-20-4/m-p/15372357#M628281

-Manan

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-Manan
    Abhishek Rao
    Community Manager
    Abhishek RaoCommunity ManagerCorrect answer
    Community Manager
    Jun 25, 2025 3:41 PM UTC

    Hi @Veronica22551996i6fw,

     

    Thanks for reporting this! The warning you're seeing related to CSXSEvent was identified and addressed by the product team.

    We recommend updating to the latest InDesign 20.4.1 release, which includes fixes for this issue. Once you've updated, please test your workflow and let us know if the warning still appears.

     

    We'd appreciate an update on your experience so we can confirm the fix is working as expected.

    Abhishek

     

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    Barb Binder
    Community Expert
    Barb BinderCommunity Expert
    Community Expert
    Jun 16, 2025 6:29 PM UTC

    This looks like a script error: see https://community.adobe.com/t5/indesign-discussions/cc2015-mac-cxsevent-does-not-have-a-constructor-warning-from-newly-installed-cep-extension-on-macosx/m-p/7881502.

     

    In case this isn't enough information, I'll add the scripting tag to your post.

     

    ~Barb

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    ~Barb at Rocky Mountain Training
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