My camera is now completely useless. Last night, it was working fine; I plugged it in first thing this morning, and there were 2 versions of the folder into which all my photographs go. I checked both; and both had a folder called esa in them that was not there before. Also, I could only see the last 8 pictures that I made. Then the whole thing crashed and now the damn thing does not work at all; it just says that it needs to be reformatted, but it cannot be.