@FURRBALLS
Try launching another channel/app instead. If that one successfully launches without the message, then press the Home button to return to Home Screen.
After that perform a System Restart on the Roku device. (Settings/System/Power/System Restart or Settings/System/System Restart).
I am thinking there may be a little bug/glitch in which the memory management is not being handled correctly by the device. (the system restart usually fixes it, but sometimes find that launching another channel prior to the restart may help by doing some reallocation). Just a guess, though.
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, 4802, 4850, Premiere+ 3921, Express 4k+ 3941, Streambar 9102