I managed to get the shell script checker and run it. The basic problem is that your install has both dpkg and rpm installed. If you temporarily rename dpkg to something else the install will go ahead... I am assuming here your OS is a RedHat distro where rpm is the default package manager. I have no idea why I have both installed... but it would seem this AppD installer is not making a very thorough check. #!/bin/sh # Script used to check if the machine has libaio on it or not. cat /dev/null > /opt/appdynamics/platform/installer/.libaio_status chmod 777 /opt/appdynamics/platform/installer/.libaio_status # Check if the dpkg or rpm command exists before running it. command -v dpkg >/dev/null 2>&1 OUT=$? if [ $OUT -eq 0 ]; then if [ `dpkg -l | grep -i libaio* | wc -l` -gt 0 ]; then echo SUCCESS >> /opt/appdynamics/platform/installer/.libaio_status exit 0 fi else command -v rpm >/dev/null 2>&1 OUT=$? if [ $OUT -eq 0 ]; then if [ `rpm -qa | grep -i libaio* | wc -l` -gt 0 ]; then echo SUCCESS >> /opt/appdynamics/platform/installer/.libaio_status exit 0 fi fi fi echo FAILURE >> /opt/appdynamics/platform/installer/.libaio_status exit 1   ... View more