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Old 06-15-2010, 01:01 AM   #1
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How to 'go back' a version??

I have just installed V0.72. It has a lot of problems on my system - and does not seem to work with my Pocketbook 302 at all well.

I have tried to reinstall V0.71, but it says that a newer version is installed and will not let me proceed.

Is there any way around this (apart from doing a complete uninstall)?
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Old 06-15-2010, 03:00 AM   #2
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While I don't need to "go back," I'm curious to know as well, just in case.
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Old 06-15-2010, 04:24 AM   #3
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You have to first install the current version to go back (on Windows at least).

Note that uninstalling Calibre does not remove your Calibre settings and ebooks library so that they are still there if you install the earlier version.

Going backwards is not always possible as sometimes the metadata.db file used with the current release is incompatible with earlier releases. If you want to guarantee you can revert you should make a copy of this file before upgrading. so that you can reinstate it if you need to revert (although note that doing so will lose any changes made in calibre after the point you made the backup).
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Old 06-15-2010, 04:56 AM   #4
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Going backwards is not always possible as sometimes the metadata.db file used with the current release is incompatible with earlier releases.
Thanks for the info. I will do that. I only want to go back to 0.71 - that was working just fine. The latest 0.72 version has introduced a number of problems.
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Old 06-15-2010, 06:30 AM   #5
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Thanks for the info. I will do that. I only want to go back to 0.71 - that was working just fine. The latest 0.72 version has introduced a number of problems.
The alternative is to wait a day or two and try 0.7.3. Then if that has problems report the bugs so they can be ironed out.
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Old 06-27-2010, 06:47 PM   #6
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Need help/advice on rolling back, pls.

This thread isn't particularly helpful. Calibre won't install 0.74 over 0.75 using the Windows Installer package because it has detected a "newer version," and for whatever reason, 0.75 won't convert my epbubs to mobis, suddenly (the epubs are clean, even 1.05 validate). Calibre just sits there and churns on a smallish file. I'd like to roll back to 0.74, which was working, I think, for conversions (Windows, XP). (It might have been all the way back to 0.72 or 3 when I last converted an epub to a mobi).

Can someone tell me if I have to completely uninstall Calibre in order to reinstall 0.74? Thanks.

n.b. - It would still be good to know if there's a simple(r) way to roll back, but it is working, albeit shockingly slowly, comparatively speaking...it took me 13 minutes to convert a 600kb file, all text with one 450x550 cover at 300dpi and 5 thumbnails of 13k each. I have no idea why it's this dog-slow, I never had this problem before....???

Last edited by Hitch; 06-27-2010 at 08:27 PM.
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Old 06-27-2010, 07:18 PM   #7
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Can someone tell me if I have to completely uninstall Calibre in order to reinstall 0.74? Thanks.
That's exactly what I did in order to reinstall v7.4 today.
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Old 06-27-2010, 07:21 PM   #8
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You do have to uninstall Calibre first
You don't usually have to uninstall the preferences directory usually although I did have to one one occasion
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Old 06-28-2010, 12:43 AM   #9
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Do a google search for which version of calibre you are looking for. I did it when I installed the 7.xxx version and it screwed up my library and it would not even let me edit it the way that I used to.
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