Canon CP-100 User Manual page 34

Error Message
Could not print xx images
Cause
You have selected a number of
images for DPOF printing, but
some of these images cannot be
printed because they were taken
with a different camera, recorded
in a different format, or have
been altered by a computer.
(where xx indicates the number
of unprintable images from
among those selected.)
Correction
Check whether the image size
matches the camera's pixel
capacity. If sizes are not
appropriate, resize the images
and convert as necessary so
that images are in a JPEG format
that the camera can display.
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