I've been having a issue now that I have all my media on an external hard drive connected to a Airport Extreme router. When I go to watch anything through plex, after not watching anything for a while; it won't play, giving me an error. But if I go to my iMac and start a song on iTunes, then stop it right away, I can then start a video on plex. It's like my hard drive falls asleep and plex won't wake it up but iTunes will. Anyone else have this issue?