# Unexpected error forces Slicer to shut-down

**URL:** <https://discourse.slicer.org/t/unexpected-error-forces-slicer-to-shut-down/7922>\
**Category:** Support\
**Created:** [August 7, 2019, 5:15pm UTC](https://discourse.slicer.org/t/unexpected-error-forces-slicer-to-shut-down/7922 "2019-08-07T17:15:55Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [August 16, 2019, 2:34pm UTC](https://discourse.slicer.org/t/unexpected-error-forces-slicer-to-shut-down/7922/21 "2019-08-16T14:34:09Z")

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Those errors likely showed up when you closed Slicer. That just indicates there are some memory leaks somewhere in the code that developers will work on fixing. You can proceed to ignore these messages.

What is surprising is that these are showing for preview builds downloaded from the Slicer website. Maybe this is only on Windows 7?

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**Author:** ![dfafalis](https://avatars.discourse-cdn.com/v4/letter/d/9de053/32.png) [@dfafalis](https://discourse.slicer.org/u/dfafalis)\
**Post date:** [August 16, 2019, 3:01pm UTC](https://discourse.slicer.org/t/unexpected-error-forces-slicer-to-shut-down/7922/22 "2019-08-16T15:01:38Z")

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Hello James,

Yes, these errors show when I close Slicer, and I am using a Windows 7 PC

[Previous page](https://discourse.slicer.org/t/unexpected-error-forces-slicer-to-shut-down/7922.md?page=1)