Simply re-install from the latest updates, synths + eLC, in the order described in the paper.
If any lock during install, clean the cached installers in the Receipts folder, particularly the eLC related ones:
System/Library/Receipts/<synthesizer>.pkg
System/Library/Receipts/eLicenserControl.pkg
System/Library/Receipts/LCC.pkg
System/Library/Receipts/NOS.pkg
System/Library/Receipts/POS.pkg
System/Library/Receipts/SyncrosoftLicenseControl.pkg
If additional problem, just log into your account interface and fill a Technical Support inquiry form.
Hope this helps,
Antoine.