Problem

When launching the configuration script ("setupUNIX.sh configure" or "configure.sh"), Gateway does not appear in the installed components list.

Resolution

1) Go to <SYNCHRONY_INSTALLER_HOME>/Configuration/
2) Open the configuration file of the desired component which does not show as installed when trying to configure (check the NOTE below)
3) Look for the "Component.ConfigureMode" parameter
4) Value it to: "true"
5) Save the file
6) Run the configuration script again

NOTE: this also applies to other Synchrony products that do not show as installed when running the configuration script (ex: Sentinel Event Router, Sentinel Universal Agent, etc.).