Trouble reading (new) 16gb sd card?

I recently bought a 16gb sd memory card for my nikon s570, and used it to video tape and photograph a concert.about halfway through the concert, when i started to record something (id already shot some stuff before and it came out fine), it stopped about 5 seconds into it and said "this card can't be read", which id never had happen with my other 2gb cards. I turned the camera off and tried again, and it worked.later i started to record and it did so again, as the concert went on, more frequently. I can take pictures fine, but it won't let me videotape. I thought it might be because it was a higher quality card probably best for SLR cameras, but i wasn't sure. The package said it was fine to use with point-and-shoot cameras, but now i'm thinking it meant the more sophisticated of those.during all this the settings were on normal, so i changed them to the highest quality including a mediocre autofocus option and electronic vr (shake/blur reduction) both i turned on (they were originally off) m but it still doesn't work. I was planning to use this card for concerts and long trips, instead of my two 2gb cards. Any ideas/help?

Many of us have been telling others that it is far better to use four 4 gb cards than one 16 gb card. NOW you know why.

If at any time, you deleted any files that night, that in and of itself could have caused the corruption of your memory card.

Sorry, next time use a handful of smaller class 6 cards

Did you remember to format your brand new memory card before you used it the very first time? Probably not.

Transfer All files that are on the card… Over to your computer, then format the card (via the camera Menu). Your User's Manual shows you how.

Formatting deletes all files and keeps the card's file system in good order. Remember to reformat the card again every time after you transfer all files to your computer (at the end of a day's shoot or after a long trip, for example).

Your two 2GB cards will be perfect to use as a backup if needed. Make sure you format them too.