Close your audio software applications first.
Start Flux:: Center, open the preferences page (click on the small cogwheel button) and set the plugin fomats that are supported by your audio host. (Install options may look different depending your operation system)
Click 'OK' to go back to the products page, then install Studio Session Plugins and Studio Session Analyzer
Then open iLok License Manager sofware, log in, then activate the Studio Session license.