Thread: Version Updating - what exactly does it entail?
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Old 09-02-2010, 03:39 AM   #5
chaley
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Quote:
Originally Posted by Philippe Lemay View Post
Ok, so the library file is inter-compatible with different versions? When I download the new version I can just point him towards the library and he'll go "AH! Thank you, now I will load all of your prefferences and customizations!"
Calibre is always forward compatible, in that a new version will take whatever steps necessary to upgrade an older version. However, calibre is not always backward compatible, meaning that once a new version is installed, it is not always possible to go back to an older version.

Up to now, the last 0.6 release and all the 0.7 releases have been mostly backward compatible. One release moved some saved searches and user-defined categories (not custom columns!) and some display preferences to the database from the config directory, and moving back across that release would cause those items to be reset to defaults.
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