I downloaded the app because I got a Roku Sharp TV in my room and wanted to cast documentaries and movie I had saved on my tablet. After about a month of no problems I tried casting a movie and the app froze. Then my TV restarted and the app crashed and exited. I thought it was a glitch so I uninstalled updates, then uninstalled the app. Nothing worked! I sent an email to roku to try and understand what was happening. No response.