hi I've recently got a chromecast the two things im trying to get working correctly is, Virgin tv anywhere (basically sky go for virgin customers) and ace stream neither seems cast to my tv from laptop.
im not rooted as first thing i did was the update.
Try casting the entire screen as opposed to the tab.
I just tried with SkyGo and I can cast the tab if it's running in a small window, but won't cast if I display in full screen. If I cast the entire screen, it's a little choppy (but I reckon I can fix that), but works.