This is the second time this has happened. I keep getting:
Sorry we were unable to stream this video. This is likely because your flash player could not be updated.
I had just reinstalled my media laptop with Linux Lite OS (a flavor of Ubuntu), and I was trying to watch a video from Amazon. It was one of the Prime Instant Videos.
To fix the issue, I followed McDougall’s instructions. Basically, it was just installing the “hal” package and deleting the .adobe and .macromedia settings directories:
sudo apt-get install hal
rm -r ~/.adobe ~/.macromedia
Finally, I rebooted and retried. It all worked fine after that.