# Import kangarooTools.UI3 as UI; UI.toggleCollapsed() # Error: ImportError: file \<maya console\> line 1: bad magic number in 'kangarooTools.UI3': b'B\\r\\r\\n'

**URL:** <https://kangaroobuilder.discourse.group/t/import-kangarootools-ui3-as-ui-ui-togglecollapsed-error-importerror-file-maya-console-line-1-bad-magic-number-in-kangarootools-ui3-bb-r-r-n/90>\
**Category:** General\
**Created:** [September 12, 2026, 5:19pm UTC](https://kangaroobuilder.discourse.group/t/import-kangarootools-ui3-as-ui-ui-togglecollapsed-error-importerror-file-maya-console-line-1-bad-magic-number-in-kangarootools-ui3-bb-r-r-n/90 "2026-09-12T17:19:35Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Mohamed](https://avatars.discourse-cdn.com/v4/letter/m/d78d45/32.png) [@Mohamed](https://kangaroobuilder.discourse.group/u/Mohamed)\
**Post date:** [September 12, 2026, 5:19pm UTC](https://kangaroobuilder.discourse.group/t/import-kangarootools-ui3-as-ui-ui-togglecollapsed-error-importerror-file-maya-console-line-1-bad-magic-number-in-kangarootools-ui3-bb-r-r-n/90/1 "2026-09-12T17:19:35Z")

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i have this while installing on maya 2024

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**Author:** ![ThomasBittner](https://avatars.discourse-cdn.com/v4/letter/t/f08c70/32.png) [@ThomasBittner](https://kangaroobuilder.discourse.group/u/ThomasBittner)\
**Post date:** [September 12, 2026, 5:23pm UTC](https://kangaroobuilder.discourse.group/t/import-kangarootools-ui3-as-ui-ui-togglecollapsed-error-importerror-file-maya-console-line-1-bad-magic-number-in-kangarootools-ui3-bb-r-r-n/90/2 "2026-09-12T17:23:34Z")

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Can you post the whole output from the script editor?

Also, that’s that still happen when you start Maya again?

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**Author:** ![Mohamed](https://avatars.discourse-cdn.com/v4/letter/m/d78d45/32.png) [@Mohamed](https://kangaroobuilder.discourse.group/u/Mohamed)\
**Post date:** [September 12, 2026, 5:25pm UTC](https://kangaroobuilder.discourse.group/t/import-kangarootools-ui3-as-ui-ui-togglecollapsed-error-importerror-file-maya-console-line-1-bad-magic-number-in-kangarootools-ui3-bb-r-r-n/90/3 "2026-09-12T17:25:43Z")

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import kangarooTools.UI3 as UI; UI.toggleCollapsed()

# Error: ModuleNotFoundError: file line 1: No module named ‘kangarooTools.UI3’

i downloaded version kangarooBuilder\_5\_22  
and this error happens when clicking on the UI shelf button

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**Author:** ![ThomasBittner](https://avatars.discourse-cdn.com/v4/letter/t/f08c70/32.png) [@ThomasBittner](https://kangaroobuilder.discourse.group/u/ThomasBittner)\
**Post date:** [September 12, 2026, 5:28pm UTC](https://kangaroobuilder.discourse.group/t/import-kangarootools-ui3-as-ui-ui-togglecollapsed-error-importerror-file-maya-console-line-1-bad-magic-number-in-kangarootools-ui3-bb-r-r-n/90/4 "2026-09-12T17:28:13Z")

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Seems like it doesn’t know about the install

Did you drag the install.mel file into maya? And did the script editor say when you did?

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<div class="post-metadata">

**Author:** ![Mohamed](https://avatars.discourse-cdn.com/v4/letter/m/d78d45/32.png) [@Mohamed](https://kangaroobuilder.discourse.group/u/Mohamed)\
**Post date:** [September 12, 2026, 5:30pm UTC](https://kangaroobuilder.discourse.group/t/import-kangarootools-ui3-as-ui-ui-togglecollapsed-error-importerror-file-maya-console-line-1-bad-magic-number-in-kangarootools-ui3-bb-r-r-n/90/5 "2026-09-12T17:30:06Z")

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yes i dropped the install.mel it’s installed already and i can see it on the shelf but the UI button isnot working nothing shows up except that error

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<div class="post-metadata">

**Author:** ![Mohamed](https://avatars.discourse-cdn.com/v4/letter/m/d78d45/32.png) [@Mohamed](https://kangaroobuilder.discourse.group/u/Mohamed)\
**Post date:** [September 12, 2026, 5:42pm UTC](https://kangaroobuilder.discourse.group/t/import-kangarootools-ui3-as-ui-ui-togglecollapsed-error-importerror-file-maya-console-line-1-bad-magic-number-in-kangarootools-ui3-bb-r-r-n/90/6 "2026-09-12T17:42:44Z")

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it was the numpy installing problem and i fixed it now thanks alot thomas