# Slicer crashes when trying to run segment editor threshold

**URL:** <https://discourse.slicer.org/t/slicer-crashes-when-trying-to-run-segment-editor-threshold/20109>\
**Category:** Support\
**Created:** [October 11, 2021, 11:17pm UTC](https://discourse.slicer.org/t/slicer-crashes-when-trying-to-run-segment-editor-threshold/20109 "2021-10-11T23:17:40Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Saima](https://avatars.discourse-cdn.com/v4/letter/s/9d8465/32.png) [@Saima](https://discourse.slicer.org/u/Saima)\
**Post date:** [October 11, 2021, 11:17pm UTC](https://discourse.slicer.org/t/slicer-crashes-when-trying-to-run-segment-editor-threshold/20109/1 "2021-10-11T23:17:40Z")

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Hi,  
Any support in this  
Switch to module: “SegmentEditor”  
QLayout::addChildLayout: layout “” already has a parent  
ctkSliderWidget::setSingleStep() 0 is out of bounds. 0 10 1  
error: [/home/saima/Downloads/Downloads/slicer/bin/SlicerApp-real] exit abnormally - Report the problem.

Slicer version is 4.11.20210226  
volume used  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/a/f/af9a6723ab8921e51fc2d0603e68858344522d8e.png)

Regards,  
Saima Safdar

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**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [October 11, 2021, 11:21pm UTC](https://discourse.slicer.org/t/slicer-crashes-when-trying-to-run-segment-editor-threshold/20109/2 "2021-10-11T23:21:06Z")

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After the crash, open slicer one more time, go to Help-\>Report a bug, and pull the second from the top log file and post it here (the topmost one will be the log from the current session).

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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:** [October 12, 2021, 12:24am UTC](https://discourse.slicer.org/t/slicer-crashes-when-trying-to-run-segment-editor-threshold/20109/3 "2021-10-12T00:24:00Z")

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The problem has been probably fixed in the Slicer Preview Release. Please test and let us know if you can reproduce the problem using the very latest Slicer Preview Release.

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**Author:** ![Saima](https://avatars.discourse-cdn.com/v4/letter/s/9d8465/32.png) [@Saima](https://discourse.slicer.org/u/Saima)\
**Post date:** [October 13, 2021, 7:55am UTC](https://discourse.slicer.org/t/slicer-crashes-when-trying-to-run-segment-editor-threshold/20109/4 "2021-10-13T07:55:45Z")

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Hi Andras,  
when I am loading a .vtk file I have this

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/5/b/5b40e9953f41ad34fc8b3cbfeeaf67992586b609.png)

there is no polys? why it is not recognizing polys in the data vtk

it is showing me the model in 3d view.

Regards,  
Saima Safdar

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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:** [October 13, 2021, 12:17pm UTC](https://discourse.slicer.org/t/slicer-crashes-when-trying-to-run-segment-editor-threshold/20109/5 "2021-10-13T12:17:51Z")

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A .VTK file can contain pretty much anything - image, surface mesh, volumetric mesh,… The one that you loaded contains an unstructured grid, which is typically a volumetric mesh and so it does not contain polygons, only volumetric cells, such as tetrahedra and wedges.