|  01-12-2021, 02:47 PM | #1 | 
| Avid reader  Posts: 22 Karma: 10 Join Date: Apr 2008 Location: Toronto, Ontario, Canada Device: Kobo and Samsung Tablet | 
				
				Downgraded from 4.23 to 3.48-can't delete books
			 
			
			I just downgraded from v4.23 64 bit to 3.48 64 bit and while it went smoothly, it kept all of my settings and library location, but I can't delete books from Calibre. I have to run the portable version 5.9 to delete the books. I get an SQL Error: no such module fts:5 when I try and delete any books. Does anyone know how I can fix this? I run Window 7 which is why I downgraded to an older version, the ebook viewer kept crashing my display drivers with the versions over 4. Thanks in advance. Ellie | 
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|  01-12-2021, 03:40 PM | #2 | 
| Grand Sorcerer            Posts: 7,158 Karma: 92500001 Join Date: Nov 2011 Location: Charlottesville, VA Device: Kindles | 
			
			If you opened a calibre library in a version 5 release of calibre then it was upgraded in a way that makes it no longer compatible with any calibre version prior to 4.23.
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|  01-12-2021, 03:46 PM | #3 | 
| Custom User Title            Posts: 11,347 Karma: 79528341 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD | 
			
			To fix it, you'll need to make a new library with "copy structure" option checked and then copy all your books into it.
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|  01-12-2021, 03:55 PM | #4 | |
| Resident Curmudgeon            Posts: 80,727 Karma: 150249619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3 | Quote: 
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|  01-12-2021, 04:09 PM | #5 | 
| Grand Sorcerer            Posts: 13,983 Karma: 243829945 Join Date: Jan 2014 Location: Estonia Device: Kobo Sage & Libra 2 | |
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|  01-12-2021, 04:16 PM | #6 | |
| Resident Curmudgeon            Posts: 80,727 Karma: 150249619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3 | Quote: 
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|  01-12-2021, 04:24 PM | #7 | 
| Custom User Title            Posts: 11,347 Karma: 79528341 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD | 
			
			May not be an option, though. The "Device" part of Ellie's profile indicate that they're using a netbook, which is known for having...not so great hardware. Please stop giving "solutions" that aren't actually solutions. | 
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|  01-12-2021, 04:32 PM | #8 | 
| Resident Curmudgeon            Posts: 80,727 Karma: 150249619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3 | 
			
			One thing I have found is that Calibre 5 is faster then previous versions. So that would be an advantage to running Calibre on a netbook providing it worked.
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|  01-12-2021, 04:38 PM | #9 | |
| Avid reader  Posts: 22 Karma: 10 Join Date: Apr 2008 Location: Toronto, Ontario, Canada Device: Kobo and Samsung Tablet | Quote: 
 I also tried copying the metadata.db from the new library to the old one (I saved the old one first) and then nothing showed up for a library. Any further ideas? Ellie | |
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|  01-12-2021, 04:40 PM | #10 | 
| Avid reader  Posts: 22 Karma: 10 Join Date: Apr 2008 Location: Toronto, Ontario, Canada Device: Kobo and Samsung Tablet | 
			
			Sorry about that but I haven't used a netbook for years, forgot to change it on my profile. I use a PC with Win7 on it.
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|  01-12-2021, 04:41 PM | #11 | 
| Custom User Title            Posts: 11,347 Karma: 79528341 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD | 
			
			Try naming it something like My New Library, a unique name. I can't remember how to rename it back though.
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|  01-12-2021, 04:43 PM | #12 | |
| Avid reader  Posts: 22 Karma: 10 Join Date: Apr 2008 Location: Toronto, Ontario, Canada Device: Kobo and Samsung Tablet | Quote: 
 Ellie | |
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|  01-12-2021, 04:45 PM | #13 | 
| Avid reader  Posts: 22 Karma: 10 Join Date: Apr 2008 Location: Toronto, Ontario, Canada Device: Kobo and Samsung Tablet | |
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|  01-12-2021, 04:48 PM | #14 | 
| Custom User Title            Posts: 11,347 Karma: 79528341 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD | 
			
			Yes, you'll need to copy the books from My Library to My New Library. It only copies structure so that no data from custom columns is lost during that.
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|  01-12-2021, 04:50 PM | #15 | |
| Custom User Title            Posts: 11,347 Karma: 79528341 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD | Quote: 
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| delete books, downgraded version, windows 7 | 
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