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 cannot 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 wont let me videotape. i thought it might be because it was a higher quality card probably best for SLR cameras, but i wasnt sure. the package said it was fine to use with point-and-shoot cameras, but now im 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 doesnt work. i was planning to use this card for concerts and long trips, instead of my two 2gb cards. any ideas/help?