# Code doesn't run on my laptop but do on other's - femlib issues?

**URL:** <https://community.freefem.org/t/code-doesnt-run-on-my-laptop-but-do-on-others-femlib-issues/1257>\
**Category:** FreeFEM installation\
**Created:** [October 15, 2021, 9:34am UTC](https://community.freefem.org/t/code-doesnt-run-on-my-laptop-but-do-on-others-femlib-issues/1257 "2021-10-15T09:34:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Minelauva](https://avatars.discourse-cdn.com/v4/letter/m/bbe5ce/32.png) [@Minelauva](https://community.freefem.org/u/Minelauva)\
**Post date:** [October 15, 2021, 9:34am UTC](https://community.freefem.org/t/code-doesnt-run-on-my-laptop-but-do-on-others-femlib-issues/1257/1 "2021-10-15T09:34:38Z")

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Hi everyone,

I was a bit shy about posting since I don’t know much yet but I was hoping you could help me with this.

I have been working on a finite element method code for a school project and we’ve had to use the following line that seems to be an issue on my laptop:  
line 37 : " real ra=Da\*(0.1\*Th(x,y).region+0.9);"

I get the following error :  
" current line = 37  
Assertion fail : (k++\<10000)  
line :1223, in file …/femlib/fem.cpp  
Assertion fail : (k++\<10000)  
line :1223, in file …/femlib/fem.cpp  
err code 6 , mpirank 0 "

And the weird thing here, in fact, is that both my instructor and my teammate can use our code without issue.  
I thought it could be because I was the only one with the latest version on but tbh I don’t know what is the problem.

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<div class="post-metadata">

**Author:** ![prj](https://avatars.discourse-cdn.com/v4/letter/p/ecae2f/32.png) [@prj](https://community.freefem.org/u/prj)\
**Post date:** [October 15, 2021, 9:38am UTC](https://community.freefem.org/t/code-doesnt-run-on-my-laptop-but-do-on-others-femlib-issues/1257/2 "2021-10-15T09:38:21Z")

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Could you please provide a runnable script in order to try to reproduce your issue?

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<div class="post-metadata">

**Author:** ![prj](https://avatars.discourse-cdn.com/v4/letter/p/ecae2f/32.png) [@prj](https://community.freefem.org/u/prj)\
**Post date:** [October 15, 2021, 10:49am UTC](https://community.freefem.org/t/code-doesnt-run-on-my-laptop-but-do-on-others-femlib-issues/1257/4 "2021-10-15T10:49:30Z")

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I can’t copy/paste this. Please surround your code by three backquotes `. Like this:

```auto
// easy copy/paste

```