I was getting the black screen of "WTF" after selecting a show to watch, time after time after time. I tried multiple routines of deleting cookies, rebooting patterns, using chrome (BLEH), trying the indexedDB thing, nothing worked for me.
What worked for me: opening a window in finder and performing a keyword search of "silverlight." I then deleted everything Silverlight related (which included 5 or 6 silverlight.dmg copies), which uninstalled silverlight. I then launched Safari and logged into my netflix, selected a show to watch, which caused netflix to prompt me that I needed silverlight to play video. So i downloaded it, installed it, and got working netflix video. back to normal. BOOM. I don't know why, but yes, boom.
What worked for me: opening a window in finder and performing a keyword search of "silverlight." I then deleted everything Silverlight related (which included 5 or 6 silverlight.dmg copies), which uninstalled silverlight. I then launched Safari and logged into my netflix, selected a show to watch, which caused netflix to prompt me that I needed silverlight to play video. So i downloaded it, installed it, and got working netflix video. back to normal. BOOM. I don't know why, but yes, boom.