SCP.OUT shows the following error message: "SPECTRUM installation detected, exiting".
To make sure SPECTRUM Control Panel (SCP) is shut down during installation for the purpose of updating Java, by design SCP checks for the existence of $SPECROOT/Install-Tools/IDX/CD directory and shuts down. $SPECROOT/Install-Tools/IDX/CD may exist when there is ongoing installation or an installation failure. Because of that SPECTRUM Control Panel will not start.
If no installation is taking place, delete $SPECROOT/Install-Tools/IDX/CD directory to resolve the problem.