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.