# Transforms not loading into Slicer 4.10.2

**URL:** <https://discourse.slicer.org/t/transforms-not-loading-into-slicer-4-10-2/12369>\
**Category:** Support\
**Created:** [July 4, 2020, 12:51am UTC](https://discourse.slicer.org/t/transforms-not-loading-into-slicer-4-10-2/12369 "2020-07-04T00:51:28Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Vinny](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/vinny/32/7052_2.png) [@Vinny](https://discourse.slicer.org/u/Vinny)\
**Post date:** [July 4, 2020, 12:51am UTC](https://discourse.slicer.org/t/transforms-not-loading-into-slicer-4-10-2/12369/1 "2020-07-04T00:51:28Z")

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Hi,

I’ve generated acpc transforms in 4.11.0-2020-06-06 that are not loading into the stable Slicer release 4.10.2. The data module is empty and does not display the transform.

Any help would be appreciated.

Thanks,

Vinny

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**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:** [July 4, 2020, 1:34am UTC](https://discourse.slicer.org/t/transforms-not-loading-into-slicer-4-10-2/12369/2 "2020-07-04T01:34:43Z")

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Can you upload the transform file somewhere and post the link here?

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**Author:** ![Vinny](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/vinny/32/7052_2.png) [@Vinny](https://discourse.slicer.org/u/Vinny)\
**Post date:** [July 4, 2020, 2:32am UTC](https://discourse.slicer.org/t/transforms-not-loading-into-slicer-4-10-2/12369/3 "2020-07-04T02:32:48Z")

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Hi Andras,

Here’s the link… [https://github.com/vinkirk/public/raw/master/Xfm\_acpc.h5](https://github.com/vinkirk/public/raw/master/Xfm_acpc.h5)

Thanks,

Vinny

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**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:** [July 4, 2020, 3:14am UTC](https://discourse.slicer.org/t/transforms-not-loading-into-slicer-4-10-2/12369/4 "2020-07-04T03:14:47Z")

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Thank you, I could reproduce the problem. It seems that ITK 5 .h5 transform file format is not backward compatible with ITK 4. I’ve [asked on the ITK forum about why is this](https://discourse.itk.org/t/itk4-cannot-read-itk5-h5-transform-files/3264).

In the meantime, if you need to save transforms in an ITK 4 compatible format, I would recommend to use a different format, such as tfm.

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**Author:** ![Vinny](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/vinny/32/7052_2.png) [@Vinny](https://discourse.slicer.org/u/Vinny)\
**Post date:** [July 4, 2020, 1:05pm UTC](https://discourse.slicer.org/t/transforms-not-loading-into-slicer-4-10-2/12369/5 "2020-07-04T13:05:43Z")

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Great thanks Andras.