# Segmentation fault running gmx mdrun to introduce a protein into a membrane **URL:** \ **Category:** User discussions\ **Created:** [November 26, 2020, 5:22pm UTC](https://gromacs.bioexcel.eu/t/segmentation-fault-running-gmx-mdrun-to-introduce-a-protein-into-a-membrane/1158 "2020-11-26T17:22:27Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![alevilla](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/alevilla/32/439_2.png) [@alevilla](https://gromacs.bioexcel.eu/u/alevilla)\ **Post date:** [November 27, 2020, 8:34am UTC](https://gromacs.bioexcel.eu/t/segmentation-fault-running-gmx-mdrun-to-introduce-a-protein-into-a-membrane/1158/2 "2020-11-27T08:34:21Z")
Hi, see a previous discussion on the same topic > [@"Energy group exclusions" are supported or not? error during mdrun -membed](https://gromacs.bioexcel.eu/t/energy-group-exclusions-are-supported-or-not-error-during-mdrun-membed/640): > > GROMACS version: 2020.3 GROMACS modification: No Here post your question Hello, everyone, i am new to gromacs, i just try to insert a membrane protein into dppc bilayer by using mdrun -membed command. During creating the file .tpr by using grompp command: gmx grompp -c prot+dppc+sol\_solvdel.gro -p system.top -f g\_membed.mdp -n index.ndx -o membed.tpr -maxwarn 2 i got this information: ERROR 1 [file g\_membed.mdp]: Energy group exclusions are currently not supported so i deleted the c… Best regards Alessandra --- _[View the full topic](https://gromacs.bioexcel.eu/t/segmentation-fault-running-gmx-mdrun-to-introduce-a-protein-into-a-membrane/1158)._