# UKF Tractography NODDI option crashes

**URL:** <https://discourse.slicer.org/t/ukf-tractography-noddi-option-crashes/12465>\
**Category:** Support\
**Tags:** diffusion\
**Created:** [July 9, 2020, 4:53pm UTC](https://discourse.slicer.org/t/ukf-tractography-noddi-option-crashes/12465 "2020-07-09T16:53:05Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Todd\_Richards](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/todd_richards/32/7408_2.png) [@Todd\_Richards](https://discourse.slicer.org/u/Todd_Richards)\
**Post date:** [July 9, 2020, 4:53pm UTC](https://discourse.slicer.org/t/ukf-tractography-noddi-option-crashes/12465/1 "2020-07-09T16:53:05Z")

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Operating system: MAC OS  
Slicer version: 4.11  
Expected behavior: UKF Tractography NODDI  
Actual behavior: UKF Tractography NODDI crashes

This UKF tractography NODDI option crashes for MAC OS but this same option with same data works perfectly on linux. The UKF tractography works fine for both MACOS and linux as the 2-tensor model. Its only the NODDI option that crashes. Can you please fix it?

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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:** [July 9, 2020, 5:16pm UTC](https://discourse.slicer.org/t/ukf-tractography-noddi-option-crashes/12465/2 "2020-07-09T17:16:17Z")

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Probably best to engage with the developers here: [https://github.com/pnlbwh/ukftractography/issues](https://github.com/pnlbwh/ukftractography/issues)