Redmine

I am trying to run a code, but I am getting the following error:
xyz2grd: More than 1 records, only 1 was expected (aborting)!

Can anyone help me with the issue? Why exactly it's happening and the possible solution.
the code is:

1. Open bounds file and read in variables #
   set bds=`cat bound.gmt` #
   set bounds = "-R${bds¹}/${bds²}/${bds³}/${bds⁴}"
   set proj = "-JM5i"
   echo "Enter output file name (with .ps)"
   set psfile=$< #
   xyz2grd grid2dv.z -Ggrid2dv.grd -I${bds⁵}/${bds⁶} -ZLB $bounds
   #xyz2grd grid2dt.z -Ggrid2dt.grd -I${bds⁷}/${bds⁸} -ZLB $bounds
   grdimage grid2dv.grd $bounds $proj -Cvelgradabs.cpt -K -P >! $psfile
   psscale -Cvelgradabs.cpt -Ba0.2f0.2:Velocity:/:km/s: -D7.3/14.3/12.00/0.4h -O -K -P >> $psfile
   #grdcontour grid2dt.grd $bounds $proj -W3 -C20.0 -O -K -P >> $psfile
   #psxy rays.dat $bounds $proj -W0.5 -O -K -P >> $psfile
   psxy receivers.dat $bounds $proj -: -St0.10 -G50/50/200 -W3 -O -K -P >> $psfile
   psxy sources.dat $bounds $proj -: -St0.10 -G50/50/50 -W3 -O -K -P >> $psfile
   pscoast $bounds $proj -Ia -W1 -A2 -Ba10f5/a10f5 -Dh -O -P >> $psfile
   ps2raster $psfile -A -Tf