Apple removes things when you update the OS, redownload the driver, run the installer, remember it won't work on 10.12 at first so you will need to do the Open anyway method in System Preferences > Security and then just install as normal per the "Select Software" dropdown box and type 33 to find the model if it doesn't find it automagically.
I just updated a mac to Sierra and now it is no longer functioning with a networked Workcenter 3325.
I believe I perfromed this installation process for: