# SciOpt 1.3.5 toolbox install with Scilab 2026.0.0

**URL:** <https://scilab.discourse.group/t/sciopt-1-3-5-toolbox-install-with-scilab-2026-0-0/1087>\
**Category:** Tools\
**Created:** [November 18, 2025, 10:54am UTC](https://scilab.discourse.group/t/sciopt-1-3-5-toolbox-install-with-scilab-2026-0-0/1087 "2025-11-18T10:54:23Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![philippeb](https://avatars.discourse-cdn.com/v4/letter/p/dfb087/32.png) [@philippeb](https://scilab.discourse.group/u/philippeb)\
**Post date:** [November 18, 2025, 10:54am UTC](https://scilab.discourse.group/t/sciopt-1-3-5-toolbox-install-with-scilab-2026-0-0/1087/1 "2025-11-18T10:54:23Z")

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Hello.

I have a problem with the installation of this toolbox. Atoms say the installation is succesfull, but after the restart of Scilab I have this message :

Start SciIPOpt 1.3.5: load gateways, atomsLoad : Une erreur est survenue au cours du chargement de ‘sci\_ipopt-1.3.5’:  
exec: error on line #22: “addinter : La bibliothèque partagée n’a pas été chargée: Unknown Error”

I have already open an issue in the gitlab of SciIPOpt but with no response.

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**Author:** ![mottelet](https://yyz2.discourse-cdn.com/free1/user_avatar/scilab.discourse.group/mottelet/32/13_2.png) [@mottelet](https://scilab.discourse.group/u/mottelet)\
**Post date:** [November 18, 2025, 11:20am UTC](https://scilab.discourse.group/t/sciopt-1-3-5-toolbox-install-with-scilab-2026-0-0/1087/2 "2025-11-18T11:20:55Z")

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Hello,

Which OS/architecture are you using ?

S.

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<div class="post-metadata">

**Author:** ![philippeb](https://avatars.discourse-cdn.com/v4/letter/p/dfb087/32.png) [@philippeb](https://scilab.discourse.group/u/philippeb)\
**Post date:** [November 18, 2025, 11:23am UTC](https://scilab.discourse.group/t/sciopt-1-3-5-toolbox-install-with-scilab-2026-0-0/1087/3 "2025-11-18T11:23:39Z")

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I’m on windows 10 with Intel x64 processor

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<div class="post-metadata">

**Author:** ![mottelet](https://yyz2.discourse-cdn.com/free1/user_avatar/scilab.discourse.group/mottelet/32/13_2.png) [@mottelet](https://scilab.discourse.group/u/mottelet)\
**Post date:** [November 18, 2025, 1:30pm UTC](https://scilab.discourse.group/t/sciopt-1-3-5-toolbox-install-with-scilab-2026-0-0/1087/4 "2025-11-18T13:30:08Z")

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Hello,

I just fixed something with the help of @antoine.elias this morning and I uploaded a new build of the package. So please uninstall the actual build of sci\_ipopt you have, restart Scilab, then you will be fine with:

```auto
atomsSystemUpdate
atomsInstall sci_ipopt
atomsLoad sci_ipopt

```

S.

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<div class="post-metadata">

**Author:** ![philippeb](https://avatars.discourse-cdn.com/v4/letter/p/dfb087/32.png) [@philippeb](https://scilab.discourse.group/u/philippeb)\
**Post date:** [November 18, 2025, 1:44pm UTC](https://scilab.discourse.group/t/sciopt-1-3-5-toolbox-install-with-scilab-2026-0-0/1087/5 "2025-11-18T13:44:00Z")

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It’s working now, thank you.