# How should we load 'Fast marching' since 88673aa in extra effects?

**URL:** <https://discourse.slicer.org/t/how-should-we-load-fast-marching-since-88673aa-in-extra-effects/20505>\
**Category:** Support\
**Created:** [November 6, 2021, 11:14am UTC](https://discourse.slicer.org/t/how-should-we-load-fast-marching-since-88673aa-in-extra-effects/20505 "2021-11-06T11:14:10Z")\
**Posts on this page:** 2\
**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:** [November 6, 2021, 11:14am UTC](https://discourse.slicer.org/t/how-should-we-load-fast-marching-since-88673aa-in-extra-effects/20505/1 "2021-11-06T11:14:10Z")

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Hi,

I usually load extra effects with --additional-module-paths. Since [88673aa](https://github.com/lassoan/SlicerSegmentEditorExtraEffects/commit/88673aa16b5c818f8319c7860eef73c361be985b), Fast Marching no longer works, yielding :

```auto
  File "/home/user/Documents/Slicer4/Custom_Ext/SlicerSegmentEditorExtraEffects/SegmentEditorFastMarching/SegmentEditorFastMarchingLib/SegmentEditorEffect.py", line 110, in onMarch
    self.fastMarching(self.percentMax.value)
  File "/home/user/Documents/Slicer4/Custom_Ext/SlicerSegmentEditorExtraEffects/SegmentEditorFastMarching/SegmentEditorFastMarchingLib/SegmentEditorEffect.py", line 175, in fastMarching
    import vtkSlicerSegmentEditorFastMarchingModuleLogicPython
ModuleNotFoundError: No module named 'vtkSlicerSegmentEditorFastMarchingModuleLogicPython'

```

There are now \*.cxx files in SegmentEditorFastMarching/Logic/ folder, so I guess SlicerSegmentEditorExtraEffects needs to be built on the dev machine. If so, how should we proceed if we don’t use factory built Slicer (Linux) ?

Thank you.

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<div class="post-metadata">

**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:** [November 6, 2021, 12:19pm UTC](https://discourse.slicer.org/t/how-should-we-load-fast-marching-since-88673aa-in-extra-effects/20505/2 "2021-11-06T12:19:33Z")

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OK, I got a successful build and packaging on the dev machine with :

`ccmake -DSlicer_DIR:PATH=/home/arc/src/Slicer-SuperBuild9/Slicer-build -DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo -DSlicer_USE_GIT_PROTOCOL:BOOL=OFF $HOME/src/SlicerSegmentEditorExtraEffects`

Will next test it, should just work.