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		#1 | 
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			 Junior Member 
			
			![]() Posts: 7 
				Karma: 10 
				Join Date: Feb 2016 
				Location: New Bombay, MH, India 
				
				
				Device: K4PC, Adobe Digital Editions, MobiPocket Reader 
				
				
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			I have been using K4PC for about a month, and had no problems with it whatsoever. 
		
	
		
		
		
		
		
		
		
		
		
		
	
	But about 2 days ago, when my book count reached above 200, book covers started to disappear. The problem is: the books show covers and then suddenly disappear when the program is restarted. (There is no specific book that does/does not show covers.) Covers never show if the program is connected to the internet, so I had to set manual proxy settings, to get disconnected. I re-installed the software, but yet had the same problems, and to add to my disappointment, I lost all the Collections I created. I use Calibre to covert all PDF/EPUB to MOBI and there seems to be no problem with Calibre showing covers!  
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		#2 | 
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			 eBook Enthusiast 
			
			![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 85,560 
				Karma: 93980341 
				Join Date: Nov 2006 
				Location: UK 
				
				
				Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6 
				
				
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			Do covers show up in books downloaded from Amazon? Try downloading a free book and see.
		 
		
	
		
		
		
		
		
		
		
		
		
		
	
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		#3 | 
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			 Junior Member 
			
			![]() Posts: 7 
				Karma: 10 
				Join Date: Feb 2016 
				Location: New Bombay, MH, India 
				
				
				Device: K4PC, Adobe Digital Editions, MobiPocket Reader 
				
				
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			These books aren't from Amazon.... 
		
	
		
		
		
		
		
		
		
		
		
		
	
	They are what Amazon calls "personal documents"  | 
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		#4 | 
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			 Junior Member 
			
			![]() Posts: 7 
				Karma: 10 
				Join Date: Feb 2016 
				Location: New Bombay, MH, India 
				
				
				Device: K4PC, Adobe Digital Editions, MobiPocket Reader 
				
				
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			And yes, covers from Amazon show..........
		 
		
	
		
		
		
		
		
		
		
		
		
		
	
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		#5 | 
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			 eBook Enthusiast 
			
			![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Posts: 85,560 
				Karma: 93980341 
				Join Date: Nov 2006 
				Location: UK 
				
				
				Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6 
				
				
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		#6 | 
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			 Junior Member 
			
			![]() Posts: 7 
				Karma: 10 
				Join Date: Feb 2016 
				Location: New Bombay, MH, India 
				
				
				Device: K4PC, Adobe Digital Editions, MobiPocket Reader 
				
				
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			I guess it is the content I have added.... 
		
	
		
		
		
		
		
		
		
		
		
		
	
	I have tried every solution possible, and still no results.... I don't know whether my problem lies in Kindle or in the Calibre conversion. Then there is this other issue, a sudden message pops up saying: "C++ Runtime Library Error"  | 
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