Kinoma Play just got another update that fixes some nagging issues some of you were seeing previously. The Youtube function was having trouble playing the occasional video and has been fixed. There also have been a number of improvements made to the embedded Twitter app in Version 5.1.56, as well as to the App Store by Mobihand and a few of the advanced settings.
There's more info about all the fixes on the Kinoma blog. You may be prompted that the update's ready for download, or you can go to the Right softkey>Player>Check for updates to get things rolling.