# Pedicle screw simulator extension - 3D rendering not functional

**URL:** <https://discourse.slicer.org/t/pedicle-screw-simulator-extension-3d-rendering-not-functional/14321>\
**Category:** Support\
**Tags:** python, pedicle-screw\
**Created:** [October 30, 2020, 6:19am UTC](https://discourse.slicer.org/t/pedicle-screw-simulator-extension-3d-rendering-not-functional/14321 "2020-10-30T06:19:56Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![drvarunagarwal](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/drvarunagarwal/32/8914_2.png) [@drvarunagarwal](https://discourse.slicer.org/u/drvarunagarwal)\
**Post date:** [October 30, 2020, 6:19am UTC](https://discourse.slicer.org/t/pedicle-screw-simulator-extension-3d-rendering-not-functional/14321/1 "2020-10-30T06:19:56Z")

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hi

I need some help with the pedicle screw simulator module.

After loading CT DICOM, when I go to second step, automatic 3D rendering is not happening.

it has a bug on the step 2 because volume rendering does not show and Python shows an error.

there is a drop down menu saying “Rendering Details”  
when I click on it options are greyed out and unselectable.

I guess there is python scripting error there.

Please guide and advise how to fix this issue.

Many thanks in anticipation.  
Best regards.

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**Author:** ![drvarunagarwal](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/drvarunagarwal/32/8914_2.png) [@drvarunagarwal](https://discourse.slicer.org/u/drvarunagarwal)\
**Post date:** [October 30, 2020, 6:59am UTC](https://discourse.slicer.org/t/pedicle-screw-simulator-extension-3d-rendering-not-functional/14321/2 "2020-10-30T06:59:07Z")

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Also the screw are loading in reverse

 ![Screenshot 2020-10-30 at 12.05.05 PM](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/7/d/7de22d0d00c93cd90c527c12b288afa06a99da49.jpeg) ![Screenshot 2020-10-30 at 12.27.56 PM](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/1/6/1627dc955c66e9efcc49483fcf211cf2fc54aec1.jpeg)

How to sort this out too?

Please advise

thanks

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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:** [October 30, 2020, 4:57pm UTC](https://discourse.slicer.org/t/pedicle-screw-simulator-extension-3d-rendering-not-functional/14321/3 "2020-10-30T16:57:51Z")

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Thanks for reporting, the extension has not been yet updated to the latest master. I’ve now fixed the issues and if you reinstall it tomorrow then it should work well.