Resilio Sync 2.4.5 is now available. It may be obtained it via direct links below, or via official download page. This version has not yet been published via auto-update.
UPGRADING FROM BITTORRENT SYNC
Sync is now released under the Resilio brand, it is treated by OS as new application and will propose you to migrate all your settings from old BitTorrent Sync app (settings are backed up during migration).
Please carefully read these articles about updating to Resilio