# Output problem

**URL:** https://discourse.paraview.org/t/output-problem/9015
**Category:** ParaView Support
**Created:** [February 19, 2022, 6:41pm UTC](https://discourse.paraview.org/t/output-problem/9015 "2022-02-19T18:41:08Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Lorenzo\_Marta](https://discourse.paraview.org/user_avatar/discourse.paraview.org/lorenzo_marta/32/8596_2.png) [@Lorenzo\_Marta](https://discourse.paraview.org/u/Lorenzo_Marta)
#### Post date: [February 19, 2022, 6:41pm UTC](https://discourse.paraview.org/t/output-problem/9015/1 "2022-02-19T18:41:08Z")

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I am trying to open mhd files obtained from 3DSlicer on Paraviw which always gives me this output message:

```auto
warning: In unknown, line 0
warning: Populating font family aliases took 211 ms. Replace uses of missing font family "Courier" with one that exists to avoid this cost. 

```

and in layout I cannot see some mhd file that I could see some time ago.  
What is the problem?

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### Author: ![nicolas.vuaille](https://discourse.paraview.org/user_avatar/discourse.paraview.org/nicolas.vuaille/32/5873_2.png) [@nicolas.vuaille](https://discourse.paraview.org/u/nicolas.vuaille)
#### Post date: [February 21, 2022, 8:39am UTC](https://discourse.paraview.org/t/output-problem/9015/2 "2022-02-21T08:39:45Z")

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It seems you open this post twice. I close this one

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### Author: ![nicolas.vuaille](https://discourse.paraview.org/user_avatar/discourse.paraview.org/nicolas.vuaille/32/5873_2.png) [@nicolas.vuaille](https://discourse.paraview.org/u/nicolas.vuaille)
#### Post date: [February 21, 2022, 8:39am UTC](https://discourse.paraview.org/t/output-problem/9015/3 "2022-02-21T08:39:48Z")

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