I won't risk installing a leaked firmware on my only Harmattan device that has no warranty (not that any warranty would be valid if it caused problems).

The problem is certainly a tracker issue (though perhaps not caused by tracker itself), as it's tracker that is used (via QtGallery abstraction) to list the videos. The log shows errors communicating with the tracker DBus interface. Ultimately, I have several other projects that I can work on more productively, so I'm not willing to spend (waste) any more time on this one. I don't even have it installed on my device.

Slightly off-topic: I've added support for KMPlayer to the next cuteTube update, so at least you won't have to put up with the suckfest that is the stock player.