# Crimson Editor bug

**URL:** <https://community.freefem.org/t/crimson-editor-bug/1359>\
**Category:** FreeFEM installation\
**Created:** [November 28, 2021, 3:15am UTC](https://community.freefem.org/t/crimson-editor-bug/1359 "2021-11-28T03:15:14Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Qianrui](https://avatars.discourse-cdn.com/v4/letter/q/9fc348/32.png) [@Qianrui](https://community.freefem.org/u/Qianrui)\
**Post date:** [November 28, 2021, 3:15am UTC](https://community.freefem.org/t/crimson-editor-bug/1359/1 "2021-11-28T03:15:14Z")

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install 4.10 Freefem++, there’s something wrong with your code and you run it in Crimson Editor, it flashes back and you don’t know what’s wrong