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			So I did some investigating, and I think I found the culprit: UltraUXThemePatcher. I use a dark theme in Win10 Pro and at one point I was switching themes with Calibre open, and it immediately crashed even though it was idle.  
 
I know what the likely culprit is but I'm not sure how to fix the issue. Having a dark theme is core to how I use my PC, and it seems that Calibre is the only app that doesn't play well with it. Any suggestions would be greatly appreciated!  
 
Note: Older versions of Calibre didn't crash (i've been using that theme patcher since windows 7 days). I'm not sure when the problem started.
		 
		
	
		
		
		
		
		
		
		
		
		
		
	
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