Sounds like the SD card is bad. It isn't a Wildwiew .3 is it ? Plug the SD card in your PC and see if you can move pictures to and from it. If not your card is fried, happened to me. Our .3 Wildview fried one of my cards and I has a cheap reader fry another one. It's been close to 100 around here too. I'm not sure the heat would do that to a card or not, our camera is in shade most of the time.