# DWIConvert and libITKFactoryRegistration.so error

**URL:** <https://discourse.slicer.org/t/dwiconvert-and-libitkfactoryregistration-so-error/2395>\
**Category:** Support\
**Created:** [March 22, 2018, 3:35am UTC](https://discourse.slicer.org/t/dwiconvert-and-libitkfactoryregistration-so-error/2395 "2018-03-22T03:35:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![micaceous](https://avatars.discourse-cdn.com/v4/letter/m/7993a0/32.png) [@micaceous](https://discourse.slicer.org/u/micaceous)\
**Post date:** [March 22, 2018, 3:35am UTC](https://discourse.slicer.org/t/dwiconvert-and-libitkfactoryregistration-so-error/2395/1 "2018-03-22T03:35:10Z")

</div>

Hello Slicer team,

I’m running Ubuntu 16.04 on Bash on Windows. I’m using the nightly build, Slicer-4.9.0-2018-02-08-linux

DWIConvert is not working…

 ![Slicer_dwiconvert_error2](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/9/3/93a9ec3143e7cf43106103f664a4437307707260.png)

It appears the problem is due to “libITKFactoryRegistration.so” not being found, but it does indeed exist (in /Slicer-4.9.0-2018-02-08-linux-amd64/lib/Slicer-4.9).

 ![Slicer_dwiconvert_error3](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/8/4/84b77bd09c250090da858aaaabe2245290100c8f.png)

Both problems also exist when I try using the stable 4.8 version.  
This used to work with previous version Slicer 4.6 (is it a problem that I deleted that older version, but the path to that now-deleted version is still in my $PATH, from setup in my ~/.profile?)

I also [saw](https://www.slicer.org/wiki/Documentation/Nightly/SlicerApplication/ApplicationSettings) that there is a way to delete previous settings involving this file (~/.config/NA-MIC/) but I’m scared to do this without knowing exactly what to do (if it’s required, can you guide me how to?)

Any other info you need?

Many thanks,  
Micah