Read Entire Update
This is a complete rewrite, with a different table structure & add-on ID.
This must be installed as a new add-on - an update will not work!
I recommend the old add-on is disabled prior to installing this update.
You should update your permissions for the new version once installed - they're now separated into two interface groups.
Once installed, you may be able to import your user & admin macros from the old version (depending on the version you had installed) - go to Tools->Import External Data and select the Post Macros entry.
The process for importing is straightforward - just click the relevant buttons.
Once the macros have been confirmed as imported (or you've manually migrated them), the old version can be removed.