# An error occurs during installation of ShapeVariationAnalyzer extension

**URL:** <https://discourse.slicer.org/t/an-error-occurs-during-installation-of-shapevariationanalyzer-extension/21803>\
**Category:** Development\
**Created:** [February 4, 2022, 4:20pm UTC](https://discourse.slicer.org/t/an-error-occurs-during-installation-of-shapevariationanalyzer-extension/21803 "2022-02-04T16:20:17Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![KIM\_TY](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/kim_ty/32/7283_2.png) [@KIM\_TY](https://discourse.slicer.org/u/KIM_TY)\
**Post date:** [February 4, 2022, 4:20pm UTC](https://discourse.slicer.org/t/an-error-occurs-during-installation-of-shapevariationanalyzer-extension/21803/1 "2022-02-04T16:20:17Z")

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Slicer 4.13.0-2022-02-02 (windows)  
 ![20220205_011328](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/1/7/17fd0b8a81a7505a40cc6058f0520637b95e33e8.png)  
 ![20220205_011409](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/c/8/c890b90fa8091fa7a1ceccacc71763a5aaa9dde6.png)

ShapeRegressionExtension & ShapeVariationAnalyzer

Two extension program cannot be installed.

An error occurs during installation.

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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:** [February 4, 2022, 6:59pm UTC](https://discourse.slicer.org/t/an-error-occurs-during-installation-of-shapevariationanalyzer-extension/21803/2 "2022-02-04T18:59:29Z")

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Thanks for reporting this, I was able to reproduce and [fix this issue](https://github.com/Slicer/Slicer/commit/068d5450ae3045ef7f4e853d1e2a1a5814eaa2fd). You can download these extensions tomorrow.

The problem was that the extension developers did not provide a homepage and icon for their extension and there was a strict check during extension installation to abort the process if these fields are missing. I’ve now updated the check to be less strict (only log warning if non-essential fields are not found).

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**Author:** ![KIM\_TY](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/kim_ty/32/7283_2.png) [@KIM\_TY](https://discourse.slicer.org/u/KIM_TY)\
**Post date:** [February 4, 2022, 7:43pm UTC](https://discourse.slicer.org/t/an-error-occurs-during-installation-of-shapevariationanalyzer-extension/21803/3 "2022-02-04T19:43:24Z")

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I need an extension to use R-Vessel-X, but I haven’t been able to use it for weeks because it’s not ShapeRegression Extension…

Thank you for your quick response.

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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:** [February 9, 2022, 10:54pm UTC](https://discourse.slicer.org/t/an-error-occurs-during-installation-of-shapevariationanalyzer-extension/21803/4 "2022-02-09T22:54:48Z")

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R-Vessel-X extension [depends on SlicerVMTK, MarkupsToModel, SegmentEditorExtraEffects, PyTorch extensions](https://github.com/R-Vessel-X/SlicerRVXLiverSegmentation/blob/main/CMakeLists.txt#L13). It is not related to ShapeRegression extension.