How to remove the existing NMS "instance" on Solaris, AIX, Suse Linux, CentOS, Ubuntu, RHEL RedHat Enterprise Linux, etc., due to error on installation;
"Error while checking for instances"
Delete the .com.zerog.registry.xml file, which should be located in /var or the user's /home directory.
You can also run the following command to locate the file:
find / -name .com.zerog.registry.xml
then remove it.
rm -f .com.zerog.registry.xml