mdfil: Error unknown flag: sander                                                                          

     usage: sander  [-O|A] -i mdin -o mdout -p prmtop -c inpcrd -r restrt
                   [-ref refc -x mdcrd -v mdvel -e mden -idip inpdip -rdip rstdip -mdip mddip -ng numgroup -remlog rem.log -remtype rem.type -rem [0|1|2] -rremd [0|1|2|3] -saveene saveene -clusterinfo cluster.info -reservoir reserv/frame -hybridtraj hybrid.strip.crd-ng numgroup -remlog remlog -rem [0|1|2] -inf mdinfo -radii radii -y inptraj]
Consult the manual for additional options.
[0] [MPI Abort by user] Aborting Program!
Abort signaled by rank 0: MPI Abort by user Aborting program !
MPI process terminated unexpectedly