# Dwifslpreproc causes "studies in base image (199) does not match number of rows in diffusion gradient table (398)"

**URL:** <https://community.mrtrix.org/t/dwifslpreproc-causes-studies-in-base-image-199-does-not-match-number-of-rows-in-diffusion-gradient-table-398/4689>\
**Category:** Uncategorized\
**Created:** [March 23, 2021, 2:15am UTC](https://community.mrtrix.org/t/dwifslpreproc-causes-studies-in-base-image-199-does-not-match-number-of-rows-in-diffusion-gradient-table-398/4689 "2021-03-23T02:15:00Z")\
**Posts on this page:** 1\
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**Author:** ![rsmith](https://community.mrtrix.org/user_avatar/community.mrtrix.org/rsmith/32/2672_2.png) [@rsmith](https://community.mrtrix.org/u/rsmith)\
**Post date:** [March 23, 2021, 2:17am UTC](https://community.mrtrix.org/t/dwifslpreproc-causes-studies-in-base-image-199-does-not-match-number-of-rows-in-diffusion-gradient-table-398/4689/2 "2021-03-23T02:17:09Z")

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Hi Daniel,

The issue is the use of software not supported by the _MRtrix3_ team, which does not contain the latest bug fixes. This particular issue was first reported on the forum [here](https://community.mrtrix.org/t/invalid-dwi-scheme-after-dwifslpreproc/3715), with the relevant fix to the code on GitHub [here](https://github.com/MRtrix3/mrtrix3/pull/2067), and it was mentioned in the `3.0.0` → `3.0.1` changelog [here](https://community.mrtrix.org/t/mrtrix-3-0-1-release/3854/2).

Cheers  
Rob

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_[View the full topic](https://community.mrtrix.org/t/dwifslpreproc-causes-studies-in-base-image-199-does-not-match-number-of-rows-in-diffusion-gradient-table-398/4689)._