I noticed for the samsung galaxy S3 the slingplayer is closing when the screen times out & that is what is causing the error. Unfortunately the max time that can be added to prevent this is 10 minutues. I download an app called "caffeine" which prevents the screen from timing out. This has solved the problem. One thing though is the menu buttons on phone will be lit up as you keep watching. This can eat up the battery life.
Please let me know if there an alternate solution or if there is a plan to fix this issue. This was my temporary fix. I'd love to hear from other people who had the same issue and used a different solution as well