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					Originally Posted by  sespr
					 
				 
				Thanks for the response. Will take a look at that but I did successfully upload another book with no issue. Moreover, I have used this Kindle with Calibre with no problem for the last couple of years. 
			
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 Do you have a Plugboard set up for that K?
Conversion Needed, indicates that none of the allowed formats exist.
If you think you have the format, then something (a PI? A Plubgoard for a single format. DRM on the format.) may be blocking that format.