# FFPARAM GUI important

**URL:** <https://gromacs.bioexcel.eu/t/ffparam-gui-important/1787>\
**Category:** User discussions\
**Created:** [March 20, 2021, 12:12am UTC](https://gromacs.bioexcel.eu/t/ffparam-gui-important/1787 "2021-03-20T00:12:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![konstantina](https://avatars.discourse-cdn.com/v4/letter/k/278dde/32.png) [@konstantina](https://gromacs.bioexcel.eu/u/konstantina)\
**Post date:** [March 20, 2021, 12:12am UTC](https://gromacs.bioexcel.eu/t/ffparam-gui-important/1787/1 "2021-03-20T00:12:12Z")

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GROMACS version:  
GROMACS modification: Yes/No  
Here post your question  
I am trying to work with the ffparam-gui. I am following the instructions for the installation carefully and precisely. However, when I enter the command ffparam-gui, a warning appears in the terminal saying: Warning! Root: rdkit not found. What am I doing wrong? Is there another installation tutorial other than the one in the official site? I would very much like to be helped

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**Author:** ![jalemkul](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/jalemkul/32/18_2.png) [@jalemkul](https://gromacs.bioexcel.eu/u/jalemkul)\
**Post date:** [March 20, 2021, 2:06am UTC](https://gromacs.bioexcel.eu/t/ffparam-gui-important/1787/2 "2021-03-20T02:06:23Z")

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This question has nothing to do with GROMACS. If you have issues with FFParam, contact its developers.