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			 Connoisseur 
			
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				Join Date: Jan 2011 
				
				
				
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			I upgraded from win7 to win10 and because many of my ancient programs stopped working, reverted to win7. Before this, however, I had upgraded Calibre and so had to unistall it and install the 3.48 version. While editing a book, changes were slow to update and saving the file took a great deal of time. I exited the editor and calibre and restarted calibre. The editor would not open. I have since done an uninstall, reboot, install and even tried older versions, but am still unable to get the editor to work. 
		
	
		
		
		
		
		
		
		
		
		
		
		
			I am guessing there is something that is not erased in the uninstall that persists, but what?  
		Last edited by lburg801; 12-04-2020 at 11:10 AM. Reason: 2nd edit: Unrelated to the editor problem, but I did have to rebuild the databases after downgrading.  | 
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		#2 | 
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			 Well trained by Cats 
			
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				Join Date: Aug 2009 
				Location: The Central Coast of California 
				
				
				Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A 
				
				
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			Does the Editor show that it is running (taskbar or Task Manager)? 
		
	
		
		
		
		
		
		
		
		
		
		
	
	It may be lost OFF Screen. Alt-Space M <arrow keys. Try left first>  | 
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			 Resident Curmudgeon 
			
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				Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3 
				
				
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			 Connoisseur 
			
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		 Quote: 
	
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		#5 | 
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			 Connoisseur 
			
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			The editor window eventually opened ... I don't know how long it took. I discovered it after posting this request for help. 
		
	
		
		
		
		
		
		
		
		
		
		
	
	I don't know if the problem was caused by downgrading to the older calibre ver, but another problem was definitely related ... I could not remove books from the library. The fix was via LibraryMaintenance/RestoreDatabase. Thanks to all who responded!  | 
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