Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
For the past few days, when I when I try to launch YouTube it gives me a can't run channel error "YouTube could not be run because there is not enough space. Please remove one or more of your installed channels and try again." I'm not having trouble with any other apps though, I can still add channels and no matter how many I remove, it doesn't do any good, so this seems to have little if anything to do with the real problem. I've tried unplugging the device, updating the system (but it's already up to date), uninstalling YouTube, rebooting the device and reinstalling it, but still the same error. My Roku model is 3810x-Roku Streaming Stick+ Software version, 9.20.build 4806-50
I was having the same problem and I ended up uninstalling a screensaver I had downloaded (Auqatic Life) and restarted the device then and it finally worked. So If you have some screensavers downloaded that may be the problem.
Try removing the channel from the Roku home screen by navigating to the channel tile, pressing the * key on your remote and choosing 'Remove channel'. Then restart your device from Settings>System>System restart. Once your player starts up again, add the channel back once more.