# Missing thermal scattering data after installing OpenMC

**URL:** <https://openmc.discourse.group/t/missing-thermal-scattering-data-after-installing-openmc/1341>\
**Category:** User Support\
**Created:** [July 28, 2021, 1:51pm UTC](https://openmc.discourse.group/t/missing-thermal-scattering-data-after-installing-openmc/1341 "2021-07-28T13:51:39Z")\
**Posts on this page:** 3\
**Page:** 2

<div class="post-metadata">

**Author:** ![gk61](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/gk61/32/1672_2.png) [@gk61](https://openmc.discourse.group/u/gk61)\
**Post date:** [November 22, 2021, 3:53pm UTC](https://openmc.discourse.group/t/missing-thermal-scattering-data-after-installing-openmc/1341/21 "2021-11-22T15:53:28Z")

</div>

Hi,I have the same problem can you help me

---

<div class="post-metadata">

**Author:** ![fruitfly](https://avatars.discourse-cdn.com/v4/letter/f/3e96dc/32.png) [@fruitfly](https://openmc.discourse.group/u/fruitfly)\
**Post date:** [November 22, 2021, 4:25pm UTC](https://openmc.discourse.group/t/missing-thermal-scattering-data-after-installing-openmc/1341/22 "2021-11-22T16:25:45Z")

</div>

I had to reinstall completely from scratch and install a cross section library in order to fix the problem.

I originally accidentally followed a fusion only guide.

---

<div class="post-metadata">

**Author:** ![gk61](https://yyz2.discourse-cdn.com/free1/user_avatar/openmc.discourse.group/gk61/32/1672_2.png) [@gk61](https://openmc.discourse.group/u/gk61)\
**Post date:** [November 22, 2021, 4:40pm UTC](https://openmc.discourse.group/t/missing-thermal-scattering-data-after-installing-openmc/1341/23 "2021-11-22T16:40:48Z")

</div>

![image](https://global.discourse-cdn.com/free1/uploads/openmc/original/2X/5/5dc7ffe2c163364eea59692f0ae54b4964504e28.png)  
 ![image](https://global.discourse-cdn.com/free1/uploads/openmc/original/2X/b/bfec1836c57aba82ccbfa1275d309d82062a621a.png)  
 ![image](https://global.discourse-cdn.com/free1/uploads/openmc/original/2X/a/a9dfaebecfb0ac0af60a190085edb904e30ec333.png)

I download this file endfb71 and wrote this command in .bashrc.sh.I added screenshot.I’m constantly getting this error, I couldn’t find what I’m missing

[Previous page](https://openmc.discourse.group/t/missing-thermal-scattering-data-after-installing-openmc/1341.md?page=1)