The binary zipfile of SoapUI would not work directly with Linux RH ES.
When the soapui.sh is executed, some error would be reported and the process aborts.
It turned out that it's a known issue, what needs to be done is uncommenting existing line in the soapui.sh script.
# JAVA_OPTS="$JAVA_OPTS -Dsoapui.jxbrowser.disable=true"
The original solution is described here: