guiengine: No GUI server connected; waiting for a connection on host

Hello Experts,

I am trying to install SAP ERP 6.0 SR3 on HP-UX Server

JAVA_PATH=/opt/java6/bin

SAPINST_JRE_HOME=/opt/java6/jre

DISPLAY=DEVSRV:0.0

JAVA_HOME=/opt/java6/bin

also check java using "which java" & "java -version" commands its also fine, but when I am entering command "./sapinst" gives following output.

1. ./sapinst

[==============================] \ extracting... done!

Starting GuiServer using:

/opt/java6/jre/bin/java -Xmx256M -Djava.security.egd=file:/dev/urandom -cp /tmp/sapinst_exe.5141.13 03125088/JAR/instgui.jar:/tmp/sapinst_exe.5141.1303125088/JAR/inqmyxml.jar SDTServer config=jar:sdt server.xml guiport=21212 sapinsthost=localhost sapinstport=21200 guistart=true

init: retrieving account information for group sapinst...

init: retrieving account information done.

load resource pool /usr/sap/disk/BS_2005_SR3_SAP_Installation_Master/IM_HPUX_IA64/resourcepool.xml

guiengine: No GUI server connected; waiting for a connection on host DEVSRV, port 21200 to continue with the installation