SanDisk Ultra SDHC 8GB play back problem

i have a SandDisk ultra 8gm memory card that has photos and videos downloaded, when I connect the camcorder to the TV I can see all the files but when I select the play option it automatically shuts down the camera source and I cannot play the memory card.
I thought it may be the camcorder but it works perfectly with all my other SanDisk cards on the TV.
Does anyone have any ideas please? I have thought of trying to have the card data downloaded onto a new card?