# VTK9 vtkBalloonWidget seg faults

**URL:** <https://discourse.vtk.org/t/vtk9-vtkballoonwidget-seg-faults/5498>\
**Category:** Development\
**Created:** [April 5, 2021, 4:11pm UTC](https://discourse.vtk.org/t/vtk9-vtkballoonwidget-seg-faults/5498 "2021-04-05T16:11:18Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![marcomusy](https://discourse.vtk.org/user_avatar/discourse.vtk.org/marcomusy/32/95_2.png) [@marcomusy](https://discourse.vtk.org/u/marcomusy)\
**Post date:** [April 5, 2021, 4:11pm UTC](https://discourse.vtk.org/t/vtk9-vtkballoonwidget-seg-faults/5498/1 "2021-04-05T16:11:18Z")

</div>

Example: [https://kitware.github.io/vtk-examples/site/Python/Widgets/BalloonWidget/](https://kitware.github.io/vtk-examples/site/Python/Widgets/BalloonWidget/)

gives Segmentation fault on vtk==9.0.1 while it works ok in vtk==8.1.2 (Ubuntu 20.04.2 LTS)