Hi, I trying install the JasperReportServer on amazon ec2 ubuntu 13.4, but when finish installation I receive the erro bellow: Warning: Problem running post-install step. Installation may not complete correctly Error running /opt/jasperreports-server-5.5/apache-ant/bin/ant import -DimportFile=install_resources/export/js-catalog : BUILD FAILED /opt/jasperreports-server-5.5/buildomatic/bin/import-export.xml:240: The following error occurred while executing this line: /opt/jasperreports-server-5.5/buildomatic/bin/import-export.xml:158: Java returned: 137 Can someone helpme? I do one seach on google and the possible error is the hosts files, but I don't know configure. How I configure the hosts? Tks.