# Julia assertion failure

**URL:** <https://discourse.julialang.org/t/julia-assertion-failure/46725>\
**Category:** General Usage\
**Tags:** gettingstarted\
**Created:** [September 16, 2020, 6:17pm UTC](https://discourse.julialang.org/t/julia-assertion-failure/46725 "2020-09-16T18:17:28Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![jacob-roth](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jacob-roth/32/1862_2.png) [@jacob-roth](https://discourse.julialang.org/u/jacob-roth)\
**Post date:** [September 16, 2020, 6:17pm UTC](https://discourse.julialang.org/t/julia-assertion-failure/46725/1 "2020-09-16T18:17:28Z")

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I just downloaded julia 1.4.2 and tried to run but received the following error message. What did I do wrong??

```julia
(base) myuser:~ $ exec '/private/var/folders/10/y7z26t512kbbfrsj12fx3wkr0000gn/T/AppTranslocation/361AA1DE-38FD-4864-AC35-DEAD96016F40/d/Julia-1.4.app/Contents/Resources/julia/bin/julia'

Assertion failed: (nfeature == n), function deserialize_target_data, file /Users/julia/buildbot/worker/package_macos64/build/src/processor.cpp, line 465.

```

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<div class="post-metadata">

**Author:** ![yuyichao](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/yuyichao/32/20_2.png) [@yuyichao](https://discourse.julialang.org/u/yuyichao)\
**Post date:** [September 16, 2020, 7:03pm UTC](https://discourse.julialang.org/t/julia-assertion-failure/46725/2 "2020-09-16T19:03:35Z")

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This assertion firing suggests that you have a corrupted sysimg or that you are maybe loading one compiled for a different julia version.

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<div class="post-metadata">

**Author:** ![jacob-roth](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jacob-roth/32/1862_2.png) [@jacob-roth](https://discourse.julialang.org/u/jacob-roth)\
**Post date:** [October 6, 2020, 3:05pm UTC](https://discourse.julialang.org/t/julia-assertion-failure/46725/3 "2020-10-06T15:05:14Z")

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Thanks, how do I fix this?

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<div class="post-metadata">

**Author:** ![yuyichao](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/yuyichao/32/20_2.png) [@yuyichao](https://discourse.julialang.org/u/yuyichao)\
**Post date:** [October 6, 2020, 5:17pm UTC](https://discourse.julialang.org/t/julia-assertion-failure/46725/4 "2020-10-06T17:17:27Z")

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It’s unclear how you broke the installation so I don’t know how you can fix it …