# Crash when loading json file from Karamba3d

**URL:** https://discourse.paraview.org/t/crash-when-loading-json-file-from-karamba3d/10616
**Category:** ParaView Support
**Created:** [October 27, 2022, 9:42am UTC](https://discourse.paraview.org/t/crash-when-loading-json-file-from-karamba3d/10616 "2022-10-27T09:42:27Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Gabriele\_Granello](https://discourse.paraview.org/user_avatar/discourse.paraview.org/gabriele_granello/32/10290_2.png) [@Gabriele\_Granello](https://discourse.paraview.org/u/Gabriele_Granello)
#### Post date: [October 27, 2022, 9:42am UTC](https://discourse.paraview.org/t/crash-when-loading-json-file-from-karamba3d/10616/1 "2022-10-27T09:42:27Z")

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Hi there,  
I am currently using Paraview 5.10.1 on Mac. I would like to import the results of a simulation carried out with Karamba3d in Grasshopper to create different plots. Karamba3d spits out a .json file with the structure of the model, but Paraview crashes every time I try to load the file into it. Am I doing something completely wrong? File attached for trial. Thanks to anyone who can help!  
Gabriele  
[Trial.json](https://discourse.paraview.org/uploads/short-url/i0ADnayHPxDQuvtV6wyT3G2UYK9.json) (3.9 MB)

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [October 31, 2022, 4:49am UTC](https://discourse.paraview.org/t/crash-when-loading-json-file-from-karamba3d/10616/2 "2022-10-31T04:49:15Z")

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Hi @Gabriele_Granello

.json is not a data format per se, it is more a way to format data into a file.

ParaView has only one reader for .json, the “FidesJSONReader”, your file is not as this fides format and ParaView is unable to read it. You may want to export to another format.

That being said, ParaView should error out instead of crashing. (@caitlin.ross )

Best,

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### Author: ![Gabriele\_Granello](https://discourse.paraview.org/user_avatar/discourse.paraview.org/gabriele_granello/32/10290_2.png) [@Gabriele\_Granello](https://discourse.paraview.org/u/Gabriele_Granello)
#### Post date: [October 31, 2022, 9:22am UTC](https://discourse.paraview.org/t/crash-when-loading-json-file-from-karamba3d/10616/3 "2022-10-31T09:22:29Z")

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Hi @mwestphal that makes a lot of sense, thanks for explaining it so clearly. I originally thought there was a standard format to pass geometry coordinates using Json, but that’s clearly not the case. Thanks for helping anyway!