Not sure why you should be getting a cover.jpeg file in the first place! All my Calibre covers are called cover.jpg.
The only place I see 'jpeg' used is in the mime-type entry in the .opf file where it is 'image/jpeg' and that that is the correct mime type for a jpeg file (whatever its file extension).
Last edited by itimpi; 05-17-2011 at 11:13 AM.
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