Just so that other don't have to go through the same:
My content failed QA because the auto-converted screenshots to lower resolution, like 96x96, were corrupted.
I had used a png for the screenshot with transparent background. The screenshot needs to be square, but as phone screens are not, I figured a transparent background is the best.
Turns out what ever image conversion software Ovi is using, it is broken and can't handle transparent pngs.
Thus my content failed and presumably I'm back at the end of the queue.