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			 I devour books! 
			
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				Device: iPad Air, Kindle 3/Kobo Aura HD, iPhone 6 
				
				
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				Opening Calibre taking a long time
			 
			
			
			Wondering if anyone has any thoughts or suggestions to help me out. I have just installed the latest version of Calibre and when I open the application I notice that it says Initializing User Interface for a substantial period of time like maybe a minute.  This never happened before.  Is there some setting I should change?  Before this Calibre opened pretty quickly. Just wanted to see if folks had any thoughts on this and thanks in advance for any ideas. Appreciate any feedback.
		 
		
	
		
		
		
		
		
		
		
		
		
		
	
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			 Well trained by Cats 
			
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			Do you have lots of columns from other columns? 
		
	
		
		
		
		
		
		
		
		
		
		
	
	Were you in Grid View or have the Cover browser showing? Did your anti-whatever also have a update?   Exclude the Library folder
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			 Deviser 
			
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		 Quote: 
	
 @childady1: This happens to me frequently when I am running other Windows 10 applications that consume either a lot of CPU or a lot of WI-FI bandwidth or both. For example, if I am downloading several things simultaneously, Calibre takes forever to start. I solve this by "pausing" the downloads, then "resuming" them after Calibre has fully started. It also used to happen when a hard-disk intensive application was running, but since I switched to an SSD, that has disappeared. Given that I have to start and re-start Calibre every few minutes while actively working on my add-ons and plug-ins to test them, I have acquired quite a bit of empirical data about this phenomenon. Since I start Calibre from a .bat file that invokes debug-mode, it is quite easy to just close the resulting command box. Otherwise, I just kill the task using Task Manager, and then "pause" the offending application, or just wait until it finishes, before restarting Calibre. DaltonST  | 
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