# Crashes on mac OS

**URL:** https://discourse.vtk.org/t/crashes-on-mac-os/3531
**Category:** Support
**Created:** [June 12, 2020, 9:22am UTC](https://discourse.vtk.org/t/crashes-on-mac-os/3531 "2020-06-12T09:22:35Z")
**Posts on this page:** 1
**Showing post:** 7

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### Author: ![codeling](https://discourse.vtk.org/user_avatar/discourse.vtk.org/codeling/32/3792_2.png) [@codeling](https://discourse.vtk.org/u/codeling)
#### Post date: [August 10, 2020, 10:29pm UTC](https://discourse.vtk.org/t/crashes-on-mac-os/3531/7 "2020-08-10T22:29:12Z")

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The EXC\_BAD\_ACCESS is fixed, it was actually the problem hinted at here: [Fail to use vtk on mac 10.15](https://discourse.vtk.org/t/fail-to-use-vtk-on-mac-10-15/3195)  
`QSurfaceFormat::setDefaultFormat(QVTKOpenGLNativeWidget::defaultFormat());` mentioned in QVTKOpenGLNativeWidget.h fixed it.

Now, I’ve got still another problem though - the QVTKOpenGLNativeWidgets don’t yet show what they are supposed to show; they show a copy of some other parts of the screen…

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_[View the full topic](https://discourse.vtk.org/t/crashes-on-mac-os/3531)._