I've made a few books on Lulu before but always have troubel with covers. This time I'm attempting to upload a one piece cover which is defintely 876 x 613 as requried, but every time I do Lulu rejects it, saying:
Your cover file is 941.546 points wide by 676.518 points high, but these are not the right dimensions. Your cover should be uploaded at 876.162 x 613 points.
Any ideas what I'm doing wrong?