The "Install with default components (Tomcat and PostgresSQL)" grayed out when installing Spectrum CABI 6* or 7*
Release : CABI 6.x or 7.x
Component : Jaspersoft for CA Spectrum
Issue with the /etc/hosts file (Linux) or %SystemRoot%\System32\drivers\etc\hosts (Windows)
Review the contents of the /etc/hosts file (Linux) or %SystemRoot%\System32\drivers\etc\hosts (Windows) and make corrections as necessary and rerun the install.