# ParaView 5.9 on MacOS Catalina 10.15.7 black screen

**URL:** https://discourse.paraview.org/t/paraview-5-9-on-macos-catalina-10-15-7-black-screen/6435
**Category:** ParaView Support
**Created:** [February 10, 2021, 12:24pm UTC](https://discourse.paraview.org/t/paraview-5-9-on-macos-catalina-10-15-7-black-screen/6435 "2021-02-10T12:24:55Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![MBG](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/m/7ab992/32.png) [@MBG](https://discourse.paraview.org/u/MBG)
#### Post date: [February 10, 2021, 12:24pm UTC](https://discourse.paraview.org/t/paraview-5-9-on-macos-catalina-10-15-7-black-screen/6435/1 "2021-02-10T12:24:55Z")

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The file works in ParaView 5.6.2. This Calculator expression is used to load the NetCDF file in spherical coordinates as Unstructured (disable Spherical Coordinates checkbox because it’s not work… don’t touch Vertical Scale and Vertical Bias input boxes by the same reason):  
`coordsZ*(cos(coordsY/180*3.141592) * cos(coordsX/180*3.141592) * iHat + cos(coordsY/180*3.141592) * sin(coordsX/180*3.141592) * jHat + sin(coordsY/180*3.141592) * kHat)`

 ![Screenshot 2021-02-10 at 19.19.38](https://discourse.paraview.org/uploads/default/original/2X/d/df747ccb00412bf550f371f2e52f3d7c68d7d7fc.png)  
[RadonSpheroid\_Sigma200km\_300km.nc](https://discourse.paraview.org/uploads/short-url/keSawpJ1fMJAiCDKfkbLvPkeNal.nc) (3.8 MB)

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### Author: ![cory.quammen](https://discourse.paraview.org/user_avatar/discourse.paraview.org/cory.quammen/32/11193_2.png) [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [February 10, 2021, 3:06pm UTC](https://discourse.paraview.org/t/paraview-5-9-on-macos-catalina-10-15-7-black-screen/6435/2 "2021-02-10T15:06:25Z")

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Hi @MBG. Could you clarify whether the black screen is only observed after applying the **Calculator** filter, or if the screen is black for any loaded date?

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### Author: ![MBG](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/m/7ab992/32.png) [@MBG](https://discourse.paraview.org/u/MBG)
#### Post date: [February 10, 2021, 3:17pm UTC](https://discourse.paraview.org/t/paraview-5-9-on-macos-catalina-10-15-7-black-screen/6435/3 "2021-02-10T15:17:40Z")

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@cory.quammen Without Calculator I can see the datafile like to line (because z coordinate values are similar to the Earths radius and x,y coordinates are decimal degrees). Also, for now I can’t open the file by ParaView 5.9

 ![Screenshot 2021-02-10 at 22.09.21](https://discourse.paraview.org/uploads/default/original/2X/9/99a704a0612e1137abcd0495ecdafb8af1733d98.jpeg)  
I click “OK” and still see empty project:  
 ![Screenshot 2021-02-10 at 22.11.01](https://discourse.paraview.org/uploads/default/original/2X/e/ea1d057c610c67a34413164ca44480d2c57ac860.jpeg)  
And I have now the same issue with VTK file too. I’ve checked again and it’s still works in ParaView 5.6.2.