When upgrading to a new version should we uninstall the previous version and then install the new version. Or should we install over the existing version? What's the recommended procedure or does it matter?
It's not necessary to uninstall older versions, although if you are encountering problems at all it may be a good idea to remove it completely then reinstall the latest version.
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I'd recommend uninstalling the old version before installing the new version, but it doesn't matter that much. You can just install the new version over the old version's directory which I do regularly, and it works fine.
Thanks, that's what I figured.