Hi Debra, further to Rav's suggestion above, if you go to File (top left corner), it should have numbers 1, 2, 3 + 4 down the bottom of the File menu. This indicates the last 4 files you have had open. If nothing appears then I suggest you read the KB article Rav suggests above. If files do appear then try clicking on one of them at a time to see which is your correct data file.