Quote:
	
	
		
			
				
					Originally Posted by  hengyu
					 
				 
				Followed these steps and for some reason, 2 of the books were added into Calibre fine, but one remained a .PRC in Calibre that says it's "DRM locked" 
			
		 | 
	
	
 Just add that book again (look at the ASIN number in the ID(?) field to determine which one), then delete the .prc from Calibre.