I noticed I had the same message on the Components page of my standalone E. I started up my player and tried playing the trailer of one my downloaded movies and I got a similar message and the trailer wouldn't play. So I backed out of that and just tried playing the movie itself. That started to work. I stopped the movie and went back into the trailer and it played fine.When i login to the browser for my-kaleidescape/components... I am getting a warning message "One or more Kaleidescape components has a network misconfiguration". everything still seems to be functioning properly with access and downloads so not sure why I am getting this message. But I am concerned this could prevent me from getting the new software update.
I decided to then click the restart button on the Components page. That seems to have fixed the issue, as the warning message disappeared once the unit restarted.