1. In Safari, open Preferences.
2. In Preferences, go to the Security tab and select Website Settings under Internet plug-ins.
3. Select Silverlight on the left panel and the website, store.cineplex.com on the right. Change the dropdown from Allow to Run in Safe Mode. Select Done.
4. Now, My Library on the store website, and click on Watch Offline. Follow the on-screen instructions.
5. Once the Download Manager is downloaded, the first time you open it hold down CTRL and select Open. Accept the on screen pop-ups. Each subsequent time you open the Download Manager you will be able to open it normally.