libapache2-mod-passenger postinst script incorrectly assumes that if a version number is passed in its an upgrade - but that actually means 'last configured version' which as the package was not purged was the same version.
libapache2- mod-passenger postinst script incorrectly assumes that if a version number is passed in its an upgrade - but that actually means 'last configured version' which as the package was not purged was the same version.