How to install prior version of Calibre when newer version installed?

SilentSeven · 04-13-2011, 11:55 AM

Couldn't find in the archives...sorry.

Windows 7 system.

Need to re-install version 7.53 as 7.54 seems to have broken some plugin scripts (not sure on that, thus I would like to rollback to test).

Tried to re-install from 0.7.53.msi package and it says a newer version is already installed.

Want to be careful here so I don't blow away my configuration and files and have to rebuild calibre.

Any suggestions?

thx!

itimpi · 04-13-2011, 12:19 PM

Uninstalling calibre does not touch your configuration files or your library. So simply uninstall the current version and then install the one you want.

This will be OK as long as there was no database format change between the two versions. If there was you will get errors trying to run the older version.

user_none · 04-13-2011, 12:34 PM

Downgrading is not supported or recommended. It may or may not work. Some versions upgrade the library database making it incompatible with older versions.

SilentSeven · 04-13-2011, 12:46 PM

Thanks everyone for the quick replies. It turns out my problem was that my plugin 'disappeared' sometime around/during the upgrade from 0.7.53 to 0.7.54. I have no explanation for this.

Once I noticed this, re-installed the plugin and everything is working again. No need to rollback.

04-13-2011, 11:55 AM	#1
SilentSeven Enthusiast Posts: 27 Karma: 10 Join Date: Sep 2010 Device: Nexus7	How to install prior version of Calibre when newer version installed? Couldn't find in the archives...sorry. Windows 7 system. Need to re-install version 7.53 as 7.54 seems to have broken some plugin scripts (not sure on that, thus I would like to rollback to test). Tried to re-install from 0.7.53.msi package and it says a newer version is already installed. Want to be careful here so I don't blow away my configuration and files and have to rebuild calibre. Any suggestions? thx!

04-13-2011, 12:19 PM	#2
itimpi Wizard Posts: 4,553 Karma: 950151 Join Date: Nov 2008 Device: Sony PRS-950, iphone/ipad (Marvin/iBooks/QuickReader)	Uninstalling calibre does not touch your configuration files or your library. So simply uninstall the current version and then install the one you want. This will be OK as long as there was no database format change between the two versions. If there was you will get errors trying to run the older version. Last edited by itimpi; 04-13-2011 at 12:37 PM.

04-13-2011, 12:46 PM	#4
SilentSeven Enthusiast Posts: 27 Karma: 10 Join Date: Sep 2010 Device: Nexus7	Thanks everyone for the quick replies. It turns out my problem was that my plugin 'disappeared' sometime around/during the upgrade from 0.7.53 to 0.7.54. I have no explanation for this. Once I noticed this, re-installed the plugin and everything is working again. No need to rollback. Last edited by SilentSeven; 04-13-2011 at 01:04 PM.

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04-13-2011, 12:34 PM	#3
user_none Sigil & calibre developer Posts: 2,487 Karma: 1063785 Join Date: Jan 2009 Location: Florida, USA Device: Nook STR	Downgrading is not supported or recommended. It may or may not work. Some versions upgrade the library database making it incompatible with older versions.

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