# UTCI Map Energy Simulation Failing After Updating via the LB Versioner

**URL:** <https://discourse.ladybug.tools/t/utci-map-energy-simulation-failing-after-updating-via-the-lb-versioner/40806>\
**Category:** honeybee\
**Created:** [September 25, 2026, 9:17am UTC](https://discourse.ladybug.tools/t/utci-map-energy-simulation-failing-after-updating-via-the-lb-versioner/40806 "2026-09-25T09:17:43Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![Aliarch](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/aliarch/32/39969_2.png) [@Aliarch](https://discourse.ladybug.tools/u/Aliarch)\
**Post date:** [September 25, 2026, 9:17am UTC](https://discourse.ladybug.tools/t/utci-map-energy-simulation-failing-after-updating-via-the-lb-versioner/40806/1 "2026-09-25T09:17:43Z")

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Hi @chris  
a  
i hope you are doing well

after updating, UTCI raises a error. i tried it on the sample (thermal comfort under a tree)  
do you know what is this error?

 ![sa](https://discourse.ladybug.tools/uploads/default/original/3X/2/4/24232196bcafb3f043bfa53b38ac1b73d00b80e5.png)

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**Author:** ![chris](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/chris/32/10179_2.png) [@chris](https://discourse.ladybug.tools/u/chris)\
**Post date:** [September 25, 2026, 3:59pm UTC](https://discourse.ladybug.tools/t/utci-map-energy-simulation-failing-after-updating-via-the-lb-versioner/40806/2 "2026-09-25T15:59:27Z")

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I cannot recreate the issue on my side:

 ![image](https://discourse.ladybug.tools/uploads/default/original/3X/4/6/4620184a63edbd7c48ccf2c7b6d99f03c2d152e5.png)

So you probably just updated via the Versioner and did not update your version of OpenStudio to 3.11, which is what the current development version of the LBT-Grasshopper plugin is using. I’ll update the check of the OpenStudio version now so you get an error message telling you that the OpenStudio version that you have is out of date.

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**Author:** ![chris](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/chris/32/10179_2.png) [@chris](https://discourse.ladybug.tools/u/chris)\
**Post date:** [September 25, 2026, 10:48pm UTC](https://discourse.ladybug.tools/t/utci-map-energy-simulation-failing-after-updating-via-the-lb-versioner/40806/3 "2026-09-25T22:48:51Z")

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The error message has been updated to tell you to install the latest version of OpenStudio, @Aliarch .

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<div class="post-metadata">

**Author:** ![Aliarch](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/aliarch/32/39969_2.png) [@Aliarch](https://discourse.ladybug.tools/u/Aliarch)\
**Post date:** [September 26, 2026, 8:44pm UTC](https://discourse.ladybug.tools/t/utci-map-energy-simulation-failing-after-updating-via-the-lb-versioner/40806/4 "2026-09-26T20:44:11Z")

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thanks @chris

No, the error is still there. The interesting thing is that I downloaded and installed the latest version of OpenStudio, 3.11. But HoneyBee is still reading version 3.10.

 ![sa](https://discourse.ladybug.tools/uploads/default/original/3X/7/3/73c22d2ee1dfc87804493aa5f5828ed51b79d209.png)

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<div class="post-metadata">

**Author:** ![chris](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/chris/32/10179_2.png) [@chris](https://discourse.ladybug.tools/u/chris)\
**Post date:** [September 26, 2026, 9:08pm UTC](https://discourse.ladybug.tools/t/utci-map-energy-simulation-failing-after-updating-via-the-lb-versioner/40806/5 "2026-09-26T21:08:52Z")

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It’s pretty clear form everything that the LB Versioner was not run for you to get the update.

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<div class="post-metadata">

**Author:** ![Aliarch](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/aliarch/32/39969_2.png) [@Aliarch](https://discourse.ladybug.tools/u/Aliarch)\
**Post date:** [September 26, 2026, 9:22pm UTC](https://discourse.ladybug.tools/t/utci-map-energy-simulation-failing-after-updating-via-the-lb-versioner/40806/6 "2026-09-26T21:22:20Z")

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I updated again. It seems to be successful. But it still reads Open Studio 3.10. I have never encountered such a problem before. I probably need to completely uninstall Pollination and download and install it again.

 ![sa](https://discourse.ladybug.tools/uploads/default/original/3X/0/6/060cc35f50364b714f956d3a313bcbc223e190e9.png)

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**Author:** ![AbrahamYezioro](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/abrahamyezioro/32/3_2.png) [@AbrahamYezioro](https://discourse.ladybug.tools/u/AbrahamYezioro)\
**Post date:** [September 27, 2026, 5:04am UTC](https://discourse.ladybug.tools/t/utci-map-energy-simulation-failing-after-updating-via-the-lb-versioner/40806/7 "2026-09-27T05:04:24Z")

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The Versioner doesn’t update OS. For that you need to use the Pollination Installer.  
Your installation of OS 3.11 is not located in the path LBT looks for.  
The best [always] is to go for the Installer option.

-A.

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<div class="post-metadata">

**Author:** ![Aliarch](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/aliarch/32/39969_2.png) [@Aliarch](https://discourse.ladybug.tools/u/Aliarch)\
**Post date:** [September 27, 2026, 11:37am UTC](https://discourse.ladybug.tools/t/utci-map-energy-simulation-failing-after-updating-via-the-lb-versioner/40806/8 "2026-09-27T11:37:41Z")

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finally i reinstalled it and it is fixed.