I have been working on an epub using Calibre as the converter platform. I have used the program in the past and it always works until now. I am working on a new book and the cover image dimensions are changed in iBooks. The image looks correct when I view it in an image viewer.
I have revised the cover image several times to change the dimensions, change the file size, modify the pixel count. The current dimensions are 1500 by 2400 pixels which is a size I have used before. The file size is 226kB. Any suggestions on how to get the cover image to show up correctly?