I am trying to crop to an 8x10 but the Full Page Editor "Cropping" tab is (10.00 x 6.65)
Your old friend the crop scissors is biting your heinie again.
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Make sure the image is selected in the preview panel. You do this by a click on teh image. Then click the crop scissors button.....
or.... turn on the crop scissors before you select/insert your image into the queue.
Fred