# Elastix registration problem

**URL:** <https://discourse.slicer.org/t/elastix-registration-problem/15347>\
**Category:** Support\
**Created:** [January 5, 2021, 10:52am UTC](https://discourse.slicer.org/t/elastix-registration-problem/15347 "2021-01-05T10:52:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![opetne](https://avatars.discourse-cdn.com/v4/letter/o/71e660/32.png) [@opetne](https://discourse.slicer.org/u/opetne)\
**Post date:** [January 5, 2021, 10:52am UTC](https://discourse.slicer.org/t/elastix-registration-problem/15347/1 "2021-01-05T10:52:27Z")

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Operating system: Windows10  
Slicer version:4.11.20200930  
Expected behavior:Registration 2 MR volumes  
Actual behavior:  
Volume registration is started in working directory: C:/Users/petnehazyors/AppData/Local/Temp/Slicer/Elastix/20210105\_114326\_719

Register volumes…

Error: [WinError 2] The system cannot find the file specified

Error log:  
Register volumes using: C:/Users/petnehazyors/AppData/Local/Temp/Slicer/Elastix/20210105\_112621\_164\elastix.exe: [’-f’, ‘C:/Users/petnehazyors/AppData/Local/Temp/Slicer/Elastix/20210105\_114326\_719\input\fixed.mha’, ‘-m’, ‘C:/Users/petnehazyors/AppData/Local/Temp/Slicer/Elastix/20210105\_114326\_719\input\moving.mha’, ‘-out’, ‘C:/Users/petnehazyors/AppData/Local/Temp/Slicer/Elastix/20210105\_114326\_719\result-transform’, ‘-p’, ‘C:\Users\petnehazyors\AppData\Roaming\NA-MIC\Extensions-29402\SlicerElastix\lib\Slicer-4.11\qt-scripted-modules\Resources\RegistrationParameters\Parameters\_Rigid.txt’, ‘-p’, ‘C:\Users\petnehazyors\AppData\Roaming\NA-MIC\Extensions-29402\SlicerElastix\lib\Slicer-4.11\qt-scripted-modules\Resources\RegistrationParameters\Parameters\_BSpline.txt’]

[WinError 2] The system cannot find the file specified

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<div class="post-metadata">

**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:** [January 7, 2021, 1:21am UTC](https://discourse.slicer.org/t/elastix-registration-problem/15347/2 "2021-01-07T01:21:56Z")

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Does it work with sample data sets (e.g., MRBrainTumor1 and MRBrainTumor2)?

If you enable Advanced / “Keep temporary files” then can you find all the reference input and output files after the registration is completed?