Installing coastline data

Dear GMT Forum

I installed GMT Ver. 5.1.1 on CentOS 6.5. I got following error message
when I ran following command.
I downloaded
ftp://ftp.soest.hawaii.edu/pwessel/gshhg/gshhg-gmt-nc4-2.2.4.tar.gz. And
I install the
all file in the directory made by extracting to $GMT_SHAREDIR/coast/.

Please teach me what wrong.

pscoast -Jm2.4 -R136/143/31.5/38.5 -Ba1.0f0.5g1.0/a1.0f0.5g1.0 -G220 -W1
-Dh -P -V > tmp.eps
pscoast: GSHHG version 2.2.0 or newer is needed to use coastlines with GMT.
Get and install GSHHG from ftp://ftp.soest.hawaii.edu/pwessel/gshhg/.
pscoast: high resolution shoreline data base not installed
pscoast: No databases available - aborts

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