Elves have only done a partial set-up of ARP/wARP for you.

To get ARP/wARP running, you may need to download a copy from
the website:
netscape http://www.embl-hamburg.de/ARP/

Once you have ARP/wARP installed, assuming it's in /programs/xtal/arp_warp_5.1/bin/Linux,
you need to type this:
setenv warpbin /programs/xtal/arp_warp_5.1/bin/Linux
set path = ( $warpbin $path )
arp_warp_setup.sh

and then answer the questions you see there.

Alternately, Elves have written a shortcut around arp_warp_setup.sh
called "setup_warp.com" in this directory.  All you have to
do is provide this script with a phased mtz file:

setup_warp.com best_phased.mtz
or
setup_warp.com ../mtz/all.mtz model.pdb
(i.e. model.pdb is a molecular replacement solution)

...and a basic warp.par file will be produced

you should then be able to run:
arp_warp.sh mode warpNtrace side
or any of the other ARP/wARP programs

Elves will have included your protein sequence in seq.pir, which
is needed for automated side-chain tracing in ARP/wARP 5.1

Elves will, eventually, place what they believe to be the "best"
phasing solution to your data in ./best_phased.mtz, but you can
use whatever mtz you want in arp_warp_setup.sh or setup_warp.com