# UWG doesn't run

**URL:** <https://discourse.ladybug.tools/t/uwg-doesnt-run/5639>\
**Category:** dragonfly-legacy\
**Tags:** uwg\
**Created:** [March 20, 2019, 12:31pm UTC](https://discourse.ladybug.tools/t/uwg-doesnt-run/5639 "2019-03-20T12:31:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![maririvo](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/m/f14d63/32.png) [@maririvo](https://discourse.ladybug.tools/u/maririvo)\
**Post date:** [March 20, 2019, 12:31pm UTC](https://discourse.ladybug.tools/t/uwg-doesnt-run/5639/1 "2019-03-20T12:31:48Z")

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Hi!  
I’m new using ladybug tools.  
I installed ladybug and dragonfly following the instructions. I tried to use the example on Hydra ( Urban Weather Generator Workflow) but the component “Bldg\_typology” keeps sending me this error when I put “True” in the boolean\_toggle number 2. The error is “Solution exception:dragonfly\_UWGBldgTypes”

 ![image](https://discourse.ladybug.tools/uploads/default/original/2X/7/7678bdd8b2ded1782b61464dc29288dfefb98e36.png)  
I hope someone can help me.  
Thanks!!

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**Author:** ![Asisnath](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/asisnath/32/27788_2.png) [@Asisnath](https://discourse.ladybug.tools/u/Asisnath)\
**Post date:** [March 20, 2019, 12:35pm UTC](https://discourse.ladybug.tools/t/uwg-doesnt-run/5639/2 "2019-03-20T12:35:15Z")

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Hello @maririvo Can you please share your file to understand better.

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**Author:** ![arezayan](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/arezayan/32/23280_2.png) [@arezayan](https://discourse.ladybug.tools/u/arezayan)\
**Post date:** [February 2, 2024, 7:06pm UTC](https://discourse.ladybug.tools/t/uwg-doesnt-run/5639/3 "2024-02-02T19:06:30Z")

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@maririvo  
Hi  
It’s because of the version. I guess you’ve installed new version of DF, you must replace older components with the newer ones and be careful some components’ inputs are altered.