# Fail to instantiate module "vtkvmtk"

**URL:** <https://discourse.slicer.org/t/fail-to-instantiate-module-vtkvmtk/35681>\
**Category:** Support\
**Tags:** vmtk\
**Created:** [April 23, 2024, 2:55pm UTC](https://discourse.slicer.org/t/fail-to-instantiate-module-vtkvmtk/35681 "2024-04-23T14:55:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![michaelli](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/michaelli/32/67910_2.png) [@michaelli](https://discourse.slicer.org/u/michaelli)\
**Post date:** [April 23, 2024, 2:55pm UTC](https://discourse.slicer.org/t/fail-to-instantiate-module-vtkvmtk/35681/1 "2024-04-23T14:55:47Z")

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I have installed the extension SlicerVMTK and restarted slicer 3d.

This also happened to v5.7.0, v5.6.0, and v5.4.0 on Windows 10. So I installed the laterest version, v5.7.0-2024-04-19. But the error is the same.

I can use this extension to extract the centerline of the vessels but I cannot conduct the **sectional analysis**.

Python 3.9.10 (main, Apr 21 2024, 23:30:25) [MSC v.1938 64 bit (AMD64)] on win32

> > >

[Qt] Error(s):  
[Qt] CLI executable: C:/Users/xxx/AppData/Local/slicer.org/Slicer 5.7.0-2024-04-19/slicer.org/Extensions-32814/SlicerVMTK/lib/Slicer-5.7/qt-loadable-modules/vtkvmtk.py  
[Qt] The process failed to start. Either the invoked program is missing, or you may have insufficient permissions to invoke the program.  
[Qt] Fail to instantiate module “vtkvmtk”  
[Qt] The following modules failed to be instantiated:  
[Qt] vtkvmtk

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<div class="post-metadata">

**Author:** ![bulala](https://avatars.discourse-cdn.com/v4/letter/b/df788c/32.png) [@bulala](https://discourse.slicer.org/u/bulala)\
**Post date:** [September 29, 2025, 2:29am UTC](https://discourse.slicer.org/t/fail-to-instantiate-module-vtkvmtk/35681/2 "2025-09-29T02:29:07Z")

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me too, did you resolve it?