Just got off a chat with Samsung Support. A lot of people are reporting this issue to them today. The app was being worked on for maintenance and somehow it got pulled from TV's and the app store. They are working on fix with 24-48 hour time frame, although they hope it will be sooner.
Just got the samsung 6050 at costco. Was watching netflix and all of a sudden the tv went blank and now Netflix is nowhere to be found. What happened?