# DF Run URBANopt not producing outputs or errors

**URL:** <https://discourse.ladybug.tools/t/df-run-urbanopt-not-producing-outputs-or-errors/22096>\
**Category:** dragonfly\
**Tags:** energy\
**Created:** [June 29, 2023, 1:30am UTC](https://discourse.ladybug.tools/t/df-run-urbanopt-not-producing-outputs-or-errors/22096 "2023-06-29T01:30:11Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![amoroz](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/a/bcef8e/32.png) [@amoroz](https://discourse.ladybug.tools/u/amoroz)\
**Post date:** [June 29, 2023, 1:30am UTC](https://discourse.ladybug.tools/t/df-run-urbanopt-not-producing-outputs-or-errors/22096/1 "2023-06-29T01:30:12Z")

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Hello, I am new to using Dragonfly for modelling and simulation.

I have created a DFmodel, and now I am trying to use it to run a simulation through the DF Run URBANopt function. When I input my .geojson, epw, and sim\_par, running the command results in the following error message:

1. Solution exception:The URBANopt simulation failed to run. No results were found at:  
C:\Users\Aidan\simulation\name\run\honeybee\_scenario

I have version 0.9.0 of URBANopt installed, and I used Gitbash as the UO installation website recommended.

I think the issue might have something to do with an error I get in my Gitbash during the installation process of UO. When I run the command “uo -v” or “uo -h”, I am presented with the following error message, before the command then executes:

![image](https://discourse.ladybug.tools/uploads/default/original/3X/3/3/337e572c04f1d89d27beb754e2d8a02dcbd3ae2a.png)

I would attach my Grasshopper and Rhino file, but as a new user I am unable to add an attachment.

Any advice would be greatly appreciated!

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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:** [June 29, 2023, 6:00pm UTC](https://discourse.ladybug.tools/t/df-run-urbanopt-not-producing-outputs-or-errors/22096/2 "2023-06-29T18:00:26Z")

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Hi @amoroz ,

I am pretty confident that your issue is the same as the one that was solved here:

> [@“DF RUN URBANopt error”：Solution exception:The URBANopt simulation failed to run.No results were found at: C: \\ Users \\ HP \\ simulation \\ kkpp\\ run \\ honeybee scenario](https://discourse.ladybug.tools/t/df-run-urbanopt-error-solution-exception-the-urbanopt-simulation-failed-to-run-no-results-were-found-at-c-users-hp-simulation-kkpp-run-honeybee-scenario/21988/5):
>
> Hi everyone, Sorry for the late reply here and thanks for posting, @huloujun , @samustpon , and @Geo_curious , so that I can provide the answer. This issue is not because you have done anything wrong in your model setup or your installation. There was a breaking change to one of the external ruby gems that used by URBANopt, which has essentially broken the URBANopt simulation for all users no matter the version of Dragonfly or URBANopt. In any event, I have pushed a patch a few days ago: I…

Just run the [LB Versioner](https://docs.ladybug.tools/ladybug-primer/components/5_version/versioner) component and that will give you the fix. Depending on how old your installation is, you may also need to run the second step here on the same topic:

> [@“DF RUN URBANopt error”：Solution exception:The URBANopt simulation failed to run.No results were found at: C: \\ Users \\ HP \\ simulation \\ kkpp\\ run \\ honeybee scenario](https://discourse.ladybug.tools/t/df-run-urbanopt-error-solution-exception-the-urbanopt-simulation-failed-to-run-no-results-were-found-at-c-users-hp-simulation-kkpp-run-honeybee-scenario/21988/9):
>
> Hey @huloujun , This is because you were using a slightly older Versioner component that did not have this fix in it that handles some new file permission limitations that Windows added: The quickest way to fix the issue is by typing this into your command line while Rhino is closed: C:\Users\[USERNAME]\ladybug\_tools\python\python.exe -m pip install ladybug-rhino -U Alternatively, you can uninstall, reinstall, and then use this Versioner component to update to the latest version: [fixed\_lb…](https://discourse.ladybug.tools/uploads/short-url/yEAuNXDUD8iDsdXZvCF7IKugwXl.gh)

I hope that solves it and feel free to post back here if it does not.

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**Author:** ![amoroz](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/a/bcef8e/32.png) [@amoroz](https://discourse.ladybug.tools/u/amoroz)\
**Post date:** [June 29, 2023, 7:38pm UTC](https://discourse.ladybug.tools/t/df-run-urbanopt-not-producing-outputs-or-errors/22096/3 "2023-06-29T19:38:24Z")

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Hi @chris,

Thank you so much for your response.

It seems that I missed the step to delete the existing simulation files. Between running the code in cmd and deleting these files, its working now.

Thanks again,  
Aidan