# Computational Centerline Error

**URL:** <https://discourse.slicer.org/t/computational-centerline-error/12039>\
**Category:** Support\
**Tags:** centerlines\
**Created:** [June 15, 2020, 5:57pm UTC](https://discourse.slicer.org/t/computational-centerline-error/12039 "2020-06-15T17:57:06Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Madelene\_Habib](https://avatars.discourse-cdn.com/v4/letter/m/4af34b/32.png) [@Madelene\_Habib](https://discourse.slicer.org/u/Madelene_Habib)\
**Post date:** [June 15, 2020, 5:57pm UTC](https://discourse.slicer.org/t/computational-centerline-error/12039/1 "2020-06-15T17:57:06Z")

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Hello,  
I’m running into this issue when I press “preview” in the SlicerVMTK Centerline Computation module.

 ![Capture2](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/f/3f7524ff802905c1c5ba6ed7b1b362aee15d0c63.png)

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**Author:** ![Fluvio\_Lobo](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fluvio_lobo/32/81262_2.png) [@Fluvio\_Lobo](https://discourse.slicer.org/u/Fluvio_Lobo)\
**Post date:** [June 18, 2020, 4:15pm UTC](https://discourse.slicer.org/t/computational-centerline-error/12039/2 "2020-06-18T16:15:25Z")

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I am having the same issue.  
Weirdly enough, it is only happening in one of my two Win machines.  
I have tried re-installing everything multiple times with no success.

Has this issue been resolved?

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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:** [June 18, 2020, 4:16pm UTC](https://discourse.slicer.org/t/computational-centerline-error/12039/3 "2020-06-18T16:16:04Z")

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Do you use the exact same Slicer version on your two computers?

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**Author:** ![Fluvio\_Lobo](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fluvio_lobo/32/81262_2.png) [@Fluvio\_Lobo](https://discourse.slicer.org/u/Fluvio_Lobo)\
**Post date:** [June 18, 2020, 4:17pm UTC](https://discourse.slicer.org/t/computational-centerline-error/12039/4 "2020-06-18T16:17:40Z")

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I am running 4.10.2 r28257 on both

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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:** [June 18, 2020, 4:20pm UTC](https://discourse.slicer.org/t/computational-centerline-error/12039/5 "2020-06-18T16:20:17Z")

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Could you compare the content of `c:\Users\(yourusername)\AppData\Roaming\NA-MIC\Extensions-28257\SlicerVMTK` folders (and all subfolders)? Do you have the exact same files on the two computers?

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<div class="post-metadata">

**Author:** ![Fluvio\_Lobo](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fluvio_lobo/32/81262_2.png) [@Fluvio\_Lobo](https://discourse.slicer.org/u/Fluvio_Lobo)\
**Post date:** [June 18, 2020, 4:20pm UTC](https://discourse.slicer.org/t/computational-centerline-error/12039/6 "2020-06-18T16:20:59Z")

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@lassoan,

Thank you!  
Without inspecting too much, I just copied all of the directories and files from the working extension to the faulty one. I was just able to calculate a center-line on my model. 😀

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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:** [June 20, 2020, 9:39pm UTC](https://discourse.slicer.org/t/computational-centerline-error/12039/7 "2020-06-20T21:39:11Z")

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Hi all, check out the new, completely reworked centerline extraction module in SlicerVMTK:

> [@New module: Extract Centerline (in SlicerVMTK extension)](https://discourse.slicer.org/t/new-module-extract-centerline-in-slicervmtk-extension/12117):
>
> We added a completely new module that makes vessel (or airway or any other tree structure) centerline extraction much faster, flexible, and robust. It can quickly extract a network, determine branch endpoints automatically, allows editing of endpoints, computing centerlines, branches, and quantitative metrics (radius, curvature, torsion, etc). The new “Extract Centerline” module is available in SlicerVMTK extension for latest Slicer-4.11 release (it replaces the old “Centerline Computation” modu…