I am working on the charlie bear project from Make and I am almost done, but the when I run the serial monitor I find that the SD card is not initializing and it does not give me an error code it just says SD I/O error. It at one point, after I added the to the card and re-formatted it to FAT 32 said that it could not open the file, but that it was ready. However it stopped that and started the initializing error again. I used the SD example sketch and it is still not initializing. Help!