Invalid XPixMap

GROMACS version:2020
GROMACS modification: Yes/No

Hi all,

I am trying to use the “xpm2ps” command in GROMACS to output a postscript file from an .xpm file. However, I keep on getting an error as such:

"Input error or input inconsistency:

Invalid XPixMap"

I am not too sure how to solve this so I hope someone could help.

Thanks in advance!