# VMTK vessel filtering not working

**URL:** https://discourse.slicer.org/t/vmtk-vessel-filtering-not-working/1263
**Category:** Support
**Created:** [October 23, 2017, 1:36am UTC](https://discourse.slicer.org/t/vmtk-vessel-filtering-not-working/1263 "2017-10-23T01:36:51Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)
#### Post date: [October 24, 2017, 1:22pm UTC](https://discourse.slicer.org/t/vmtk-vessel-filtering-not-working/1263/5 "2017-10-24T13:22:35Z")

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I just tried the vmtk extension on mac with Slicer 4.8 and confirmed it isn’t working.

There’s an issue with the python library:

```auto
>>> import vtkvmtkSegmentationPython as vtkvmtkSegmentation
Traceback (most recent call last):
  File "<console>", line 1, in <module>
ImportError: dlopen(/Applications/Slicer-4.8.0.app/Contents/Extensions-26489/SlicerVMTK/lib/Slicer-4.8/qt-loadable-modules/Python/vtkvmtkSegmentationPython.so, 2): Library not loaded: libvtkvmtkSegmentationPythonD.dylib
  Referenced from: /Applications/Slicer-4.8.0.app/Contents/Extensions-26489/SlicerVMTK/lib/Slicer-4.8/qt-loadable-modules/Python/vtkvmtkSegmentationPython.so
  Reason: image not found

```

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