# VMTK extension fails to build for preview

**URL:** https://discourse.slicer.org/t/vmtk-extension-fails-to-build-for-preview/30355
**Category:** VMTK
**Created:** [July 2, 2023, 7:49pm UTC](https://discourse.slicer.org/t/vmtk-extension-fails-to-build-for-preview/30355 "2023-07-02T19:49:42Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![chir.set](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/chir.set/32/66982_2.png) [@chir.set](https://discourse.slicer.org/u/chir.set)
#### Post date: [July 2, 2023, 7:49pm UTC](https://discourse.slicer.org/t/vmtk-extension-fails-to-build-for-preview/30355/1 "2023-07-02T19:49:42Z")

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Hi,

I draw to your attention that SlicerVMTK extension shows build failure on cdash for all OS.

Thank you for considering.

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### Author: ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [July 3, 2023, 7:39pm UTC](https://discourse.slicer.org/t/vmtk-extension-fails-to-build-for-preview/30355/2 "2023-07-03T19:39:11Z")

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Thank you for reporting. We’ve noticed this, too, and working on a fix. I expect it will work again by the end of this week.

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<div class="post-metadata">

### Author: ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [July 4, 2023, 3:37pm UTC](https://discourse.slicer.org/t/vmtk-extension-fails-to-build-for-preview/30355/3 "2023-07-04T15:37:09Z")

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The VMTK extension build error has been [fixed](https://github.com/vmtk/SlicerExtension-VMTK/commit/48a071a88de626dc305134a1ac6e252fe0d5bed9). The VMTK extension should be available again in Slicer Preview Releases from tomorrow.