# RuntimeError when plotting (in pincell-tutorial's universe.plot() and openmc.plot\_geometry())

**URL:** https://openmc.discourse.group/t/runtimeerror-when-plotting-in-pincell-tutorials-universe-plot-and-openmc-plot-geometry/2605
**Category:** User Support
**Created:** [January 10, 2023, 12:19pm UTC](https://openmc.discourse.group/t/runtimeerror-when-plotting-in-pincell-tutorials-universe-plot-and-openmc-plot-geometry/2605 "2023-01-10T12:19:47Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![paulromano](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/paulromano/32/486_2.png) [@paulromano](https://openmc.discourse.group/u/paulromano)
#### Post date: [January 28, 2023, 5:00pm UTC](https://openmc.discourse.group/t/runtimeerror-when-plotting-in-pincell-tutorials-universe-plot-and-openmc-plot-geometry/2605/4 "2023-01-28T17:00:37Z")

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@sop_kretzschmar Glad to hear you were able to get around this problem! To expand on the underlying issue:

```auto
libpng warning: Application built with libpng-1.4.12 but running with 1.6.39
Traceback (most recent call last):

```

This tells us that the OpenMC executable was built with one version of libpng (used for plotting) but at the time it’s running, it is picking up a different version of libpng. I think this is really a problem with the conda package for OpenMC, and we probably need to update our conda-forge recipe.

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_[View the full topic](https://openmc.discourse.group/t/runtimeerror-when-plotting-in-pincell-tutorials-universe-plot-and-openmc-plot-geometry/2605)._