I have had the same thing happen to me. I just kept trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and trying and then it finally worked. I had a dirty disk. HMMMMM, good luck.