I recently bought a Panasonic TX-P42UT30B 3D TV which came with 2 pairs of Panasonic TY-EW3D3ME 3D glasses. I also have a Panasonic DMP-BDT300 3D Blu-Ray player. I watched Megamind in 3D with my son and was really impressed, so decided to buy another 3D film. I bought 'Journey to the centre of the earth' 3D only to find that it would only work with the cheap cardboard 3D glasses and even that was poor and would not play in 3D with my Panasonic 3D glasses. I am naturally disappointed and want to know why some 3D films won't work on a 3D TV and how can I avoid buying a film in future which does not work properly with my 3D Panasonic TV and Panasonic glasses. Kevin.