I am having the same issue. Tried it on windows and on a mac.

I created my app in the Opera TV Store portal and I see it on the device. But I get the same blank all black screen when I select open.

I had the same error message on the Samsung Blu Ray player. I rebooted and now I just get a blank screen when I launch the "URL Loader". I added it to "My Apps" and now it opens but urls don't load. You see a loading wheel at the top right corner of the screen and then just stays in same screen.