To anyone who's been following along and might have the same problem, here is the fix.
Evidently from Mac OS 10.12 Sierria and up, Privacy and Security settings prevent the TI drivers from operating. You need to restart and immediately to to
System Preferences/Security and Privacy. You will see that it has blocked "Ploytec GmbH" from loading. Allow it to load and restart. The TI plug in will then operate as it should.
thank god for you, you just saved me from trading this amazing synth.