Can't install Silverlight for Netflix via Safari (verification failed)

I tried to watch a streaming video on Netflix and was told I needed to uninstall and then reinstall Silverlight as there was an error with my version. I successfully uninstalled my old version of Silverlight but have not been able to successfully re-open Silverlight.

When I download Silverlight through Safari, the program downloads, but I can't open it because it says "Verification Failed."

When I download Silverlight through Firefox, the program downloads, but I can't open it because it says "Invalid checksum."

I have made sure that my versions of Safari and Firefox are up to date, and I have tried downloading Silverlight from the Netflix website and the Microsoft website. Also, I have restarted my computer several times, but that doesn't seem to do anything either.

What do I do now? Help!