# Landmark registration shows just white page

**URL:** <https://discourse.slicer.org/t/landmark-registration-shows-just-white-page/20844>\
**Category:** Support\
**Created:** [November 30, 2021, 2:25pm UTC](https://discourse.slicer.org/t/landmark-registration-shows-just-white-page/20844 "2021-11-30T14:25:05Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![lolamartinalonso](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lolamartinalonso/32/12727_2.png) [@lolamartinalonso](https://discourse.slicer.org/u/lolamartinalonso)\
**Post date:** [November 30, 2021, 2:25pm UTC](https://discourse.slicer.org/t/landmark-registration-shows-just-white-page/20844/1 "2021-11-30T14:25:05Z")

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Operating system:64 bit  
Slicer version:4.11.20210226  
Expected behavior:  
Actual behavior:

When I click on Landmark registration I am getting this type of error that the page appears white, and I cannot click anywhere.

I do not know why is it occurring now because I have used so many times before this volume

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/9/391abadc76bf3e8d87982c3257897012213338ab.png)

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [November 30, 2021, 2:34pm UTC](https://discourse.slicer.org/t/landmark-registration-shows-just-white-page/20844/2 "2021-11-30T14:34:51Z")

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Hmm, can you share the error log?

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<div class="post-metadata">

**Author:** ![lolamartinalonso](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lolamartinalonso/32/12727_2.png) [@lolamartinalonso](https://discourse.slicer.org/u/lolamartinalonso)\
**Post date:** [November 30, 2021, 2:38pm UTC](https://discourse.slicer.org/t/landmark-registration-shows-just-white-page/20844/3 "2021-11-30T14:38:50Z")

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Any error log appears, it´s like only this volume is not working. If I click in all the other modules, it works properly.

I have restarted the computer but the same. I´ll try to re-install it.

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [November 30, 2021, 2:41pm UTC](https://discourse.slicer.org/t/landmark-registration-shows-just-white-page/20844/4 "2021-11-30T14:41:35Z")

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Here’s how to look in the error log:

[https://www.slicer.org/wiki/Documentation/Nightly/SlicerApplication/ErrorLog#To\_capture\_the\_entire\_error\_log\_for\_a\_report](https://www.slicer.org/wiki/Documentation/Nightly/SlicerApplication/ErrorLog#To_capture_the_entire_error_log_for_a_report)

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<div class="post-metadata">

**Author:** ![lolamartinalonso](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lolamartinalonso/32/12727_2.png) [@lolamartinalonso](https://discourse.slicer.org/u/lolamartinalonso)\
**Post date:** [November 30, 2021, 2:47pm UTC](https://discourse.slicer.org/t/landmark-registration-shows-just-white-page/20844/5 "2021-11-30T14:47:15Z")

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Oh, I understand; here it is the error log:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/5/1/515b96d2b6711afcabffdd9a9e00d12867f4a456.png)

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<div class="post-metadata">

**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [November 30, 2021, 2:51pm UTC](https://discourse.slicer.org/t/landmark-registration-shows-just-white-page/20844/6 "2021-11-30T14:51:40Z")

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Yes, that’s the error log and it shows where the failure happens but it’s not clear why. Can you try the latest SlicerPreview version? If this is specific to a given volume or you can otherwise give step-by-step details about how to reproduce the error we can look into it.

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<div class="post-metadata">

**Author:** ![lolamartinalonso](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lolamartinalonso/32/12727_2.png) [@lolamartinalonso](https://discourse.slicer.org/u/lolamartinalonso)\
**Post date:** [December 1, 2021, 7:33am UTC](https://discourse.slicer.org/t/landmark-registration-shows-just-white-page/20844/7 "2021-12-01T07:33:07Z")

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I have tried with the SlicerPreview Version and it is still happening the same. The steps that I follow are these ones:

I click on Add Data and I upload two .mha volumes

When they are uploaded I am able to see all the slices and the misalignment between them.

Then I go to Registration and I click on Landmark Registration. And a popup says to pick the volume to register, so I click on them on the fixed volume and moving volume and when I click on Apply is when the right part of the page appears in white.

But I am able to see all the other volumes, and to click in all parts, except the options of the Landmark Registration where I have to add Landmarks and select the refinement etc.

Does anyone have an idea of what is happening?

Thanks

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<div class="post-metadata">

**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [December 1, 2021, 1:49pm UTC](https://discourse.slicer.org/t/landmark-registration-shows-just-white-page/20844/8 "2021-12-01T13:49:23Z")

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Do you get the same behavior if you use the sample data? E.g. the pre-post dental surgery CBCT scans are a good test case. Perhaps there’s something different about your mha files? Can you share them or describe them?

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<div class="post-metadata">

**Author:** ![lolamartinalonso](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lolamartinalonso/32/12727_2.png) [@lolamartinalonso](https://discourse.slicer.org/u/lolamartinalonso)\
**Post date:** [December 2, 2021, 12:35pm UTC](https://discourse.slicer.org/t/landmark-registration-shows-just-white-page/20844/9 "2021-12-02T12:35:38Z")

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The problem is solved!

The day I started having the error, I was trying to change some parameters by clicking on the slice spacing button that is on the screen of each view of the volume.

Today I have clicked on View and then to Restore to default and the Landmark Registration is working properly.

I think that maybe this was the triggering point of this error.

Hope this can help to others.

Thanks for your help

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/8/1/8166eeeb1259dd50e0d9df927de84541feaa856a.jpeg)