Recorders and Players
Recorder Player Problems? Ask a Technician for Answers ASAP
"The Great Gatsby" BluRay disc should play ok on all BluRay players, especially newer ones.
If you are having difficulty getting it to play on the DMP-BDT120, then there may be a firmware glitch.
Try doing a factory reset on the DMP-BDT120. If the disc still won't play, then try updating the firmware.
Full instructions on how to download and install the firmware update are on the Panasonic website: http://panasonic.jp/support/global/cs/bd/download/bdt220/bdt220_euro.html