# OpenDose3D Compatibility Issue with Latest SlicerElastix Version (AttributeError on Registration)

**URL:** <https://discourse.slicer.org/t/opendose3d-compatibility-issue-with-latest-slicerelastix-version-attributeerror-on-registration/43275>\
**Category:** Support\
**Tags:** opendose3d\
**Created:** [June 9, 2025, 7:42pm UTC](https://discourse.slicer.org/t/opendose3d-compatibility-issue-with-latest-slicerelastix-version-attributeerror-on-registration/43275 "2025-06-09T19:42:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Kumar\_Abhishek](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/kumar_abhishek/32/80378_2.png) [@Kumar\_Abhishek](https://discourse.slicer.org/u/Kumar_Abhishek)\
**Post date:** [June 9, 2025, 7:42pm UTC](https://discourse.slicer.org/t/opendose3d-compatibility-issue-with-latest-slicerelastix-version-attributeerror-on-registration/43275/1 "2025-06-09T19:42:01Z")

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Hi team,

I’m using OpenDose3D version `d73d832 (2025-01-12)` on Slicer 5.6, and facing an issue when executing the **Registration** step. Upon clicking **Execute** in the Registration tab, I get the following error:

```auto
AttributeError: module 'Elastix' has no attribute 'RegistrationPresets_ParameterFilenames'

```

I checked the available attributes in the `Elastix` module and indeed, `RegistrationPresets_ParameterFilenames` is missing. My installed version of **SlicerElastix** is `93c57ae (2025-01-18)`, which seems to have introduced this change.

Can you confirm if:

- OpenDose3D depends on a specific version of SlicerElastix?
- There’s a recommended SlicerElastix version compatible with OpenDose3D `d73d832`?
- Any workaround or patch is available for this?

Thanks in advance!