The Sony Blu-ray high-definition version of Lionsgate's horror flick The Descent plays fine on Sony's new PlayStation3 game device, but those who attempt to watch it on an ordinary Sony Blu-ray player will see only a blank screen, according to reports that have emerged over the past few days on several websites devoted to high-definition video formats. A similar problem was reported with Pioneer Blu-ray players. The Descent disc features numerous "extras" produced exclusively for the Blu-ray format, including a picture-in-picture video commentary. And therein lies the problem, according to the HD websites. Lionsgate used BD-Java technology for the extras, which is not compatible with the Sony BDP-S1 and Pioneer Elite Blu-ray players. Sony says it is aware of the problem and is working to provide an update to the operating system of its players by early this year.