One of my p2 cards is filled with thumbnail images. I am unable to view them on the camera. Each thumbnail has a red x on the top right corner (each one has zero duration).
Is the card corrupt? Is there a setting problem?
Also, your camera must be in the same format as the footage shot in order to playback. If the footage is 720pN24 AVC-Intra, your camera can't be in 1080p30 DVCPro HD. If you switch your camera to match the footage, you should be all good.