Unable to "list" files with .jrm extension

[Maybee, Julie]

The program to list (ls) files seems to work fine for other extensions (such as
.rep shown below), however I get an error when I try to list files with a .jrm
extension.  Doesn't matter if I try it from the command line or from the menu, I
get the same error either way.  Am I doing something wrong?  See below:

address@hidden inorganic]$ ls *.rep
afcout.rep  afc.rep  csmend.rep  jrmtest.rep  rr.rep  tests.rep

address@hidden inorganic]$ ls *.jrm
ls: invalid option -- e
Try `ls --help' for more information.
address@hidden inorganic]$